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clang-p2996/llvm/test/Transforms/LoopUnroll/ARM/multi-blocks.ll
Philip Reames 37ead201e6 [runtime-unroll] Use incrementing IVs instead of decrementing ones 
This is one of those wonderful "in theory X doesn't matter, but in practice is does" changes. In this particular case, we shift the IVs inserted by the runtime unroller to clamp iteration count of the loops* from decrementing to incrementing.

Why does this matter?  A couple of reasons:
* SCEV doesn't have a native subtract node.  Instead, all subtracts (A - B) are represented as A + -1 * B and drops any flags invalidated by such.  As a result, SCEV is slightly less good at reasoning about edge cases involving decrementing addrecs than incrementing ones.  (You can see this in the inferred flags in some of the test cases.)
* Other parts of the optimizer produce incrementing IVs, and they're common in idiomatic source language.  We do have support for reversing IVs, but in general if we produce one of each, the pair will persist surprisingly far through the optimizer before being coalesced.  (You can see this looking at nearby phis in the test cases.)

Note that if the hardware prefers decrementing (i.e. zero tested) loops, LSR should convert back immediately before codegen.

* Mostly irrelevant detail: The main loop of the prolog case is handled independently and will simple use the original IV with a changed start value.  We could in theory use this scheme for all iteration clamping, but that's a larger and more invasive change.
2021-11-12 15:44:58 -08:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -mtriple=thumbv8m.main -mcpu=cortex-m33 -loop-unroll -S < %s -o - | FileCheck %s
; RUN: opt -mtriple=thumbv7em -mcpu=cortex-m7 -loop-unroll -S < %s -o - | FileCheck %s
define void @test_three_blocks(i32* nocapture %Output,
;
; CHECK-LABEL: @test_three_blocks(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP8:%.*]] = icmp eq i32 [[MAXJ:%.*]], 0
; CHECK-NEXT: br i1 [[CMP8]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY_PREHEADER:%.*]]
; CHECK: for.body.preheader:
; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[MAXJ]], -1
; CHECK-NEXT: [[XTRAITER:%.*]] = and i32 [[MAXJ]], 3
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[TMP0]], 3
; CHECK-NEXT: br i1 [[TMP1]], label [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA:%.*]], label [[FOR_BODY_PREHEADER_NEW:%.*]]
; CHECK: for.body.preheader.new:
; CHECK-NEXT: [[UNROLL_ITER:%.*]] = sub i32 [[MAXJ]], [[XTRAITER]]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.cond.cleanup.loopexit.unr-lcssa.loopexit:
; CHECK-NEXT: [[TEMP_1_LCSSA_PH_PH:%.*]] = phi i32 [ [[TEMP_1_3:%.*]], [[FOR_INC_3:%.*]] ]
; CHECK-NEXT: [[J_010_UNR_PH:%.*]] = phi i32 [ [[INC_3:%.*]], [[FOR_INC_3]] ]
; CHECK-NEXT: [[TEMP_09_UNR_PH:%.*]] = phi i32 [ [[TEMP_1_3]], [[FOR_INC_3]] ]
; CHECK-NEXT: br label [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA]]
; CHECK: for.cond.cleanup.loopexit.unr-lcssa:
; CHECK-NEXT: [[TEMP_1_LCSSA_PH:%.*]] = phi i32 [ undef, [[FOR_BODY_PREHEADER]] ], [ [[TEMP_1_LCSSA_PH_PH]], [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA_LOOPEXIT:%.*]] ]
; CHECK-NEXT: [[J_010_UNR:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[J_010_UNR_PH]], [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA_LOOPEXIT]] ]
; CHECK-NEXT: [[TEMP_09_UNR:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[TEMP_09_UNR_PH]], [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA_LOOPEXIT]] ]
; CHECK-NEXT: [[LCMP_MOD:%.*]] = icmp ne i32 [[XTRAITER]], 0
; CHECK-NEXT: br i1 [[LCMP_MOD]], label [[FOR_BODY_EPIL_PREHEADER:%.*]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]]
; CHECK: for.body.epil.preheader:
; CHECK-NEXT: br label [[FOR_BODY_EPIL:%.*]]
; CHECK: for.body.epil:
; CHECK-NEXT: [[ARRAYIDX_EPIL:%.*]] = getelementptr inbounds i32, i32* [[CONDITION:%.*]], i32 [[J_010_UNR]]
; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX_EPIL]], align 4
; CHECK-NEXT: [[TOBOOL_EPIL:%.*]] = icmp eq i32 [[TMP2]], 0
; CHECK-NEXT: br i1 [[TOBOOL_EPIL]], label [[FOR_INC_EPIL:%.*]], label [[IF_THEN_EPIL:%.*]]
; CHECK: if.then.epil:
; CHECK-NEXT: [[ARRAYIDX1_EPIL:%.*]] = getelementptr inbounds i32, i32* [[INPUT:%.*]], i32 [[J_010_UNR]]
; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[ARRAYIDX1_EPIL]], align 4
; CHECK-NEXT: [[ADD_EPIL:%.*]] = add i32 [[TMP3]], [[TEMP_09_UNR]]
; CHECK-NEXT: br label [[FOR_INC_EPIL]]
; CHECK: for.inc.epil:
; CHECK-NEXT: [[TEMP_1_EPIL:%.*]] = phi i32 [ [[ADD_EPIL]], [[IF_THEN_EPIL]] ], [ [[TEMP_09_UNR]], [[FOR_BODY_EPIL]] ]
; CHECK-NEXT: [[INC_EPIL:%.*]] = add nuw i32 [[J_010_UNR]], 1
; CHECK-NEXT: [[EPIL_ITER_CMP:%.*]] = icmp ne i32 1, [[XTRAITER]]
; CHECK-NEXT: br i1 [[EPIL_ITER_CMP]], label [[FOR_BODY_EPIL_1:%.*]], label [[FOR_COND_CLEANUP_LOOPEXIT_EPILOG_LCSSA:%.*]]
; CHECK: for.body.epil.1:
; CHECK-NEXT: [[ARRAYIDX_EPIL_1:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC_EPIL]]
; CHECK-NEXT: [[TMP4:%.*]] = load i32, i32* [[ARRAYIDX_EPIL_1]], align 4
; CHECK-NEXT: [[TOBOOL_EPIL_1:%.*]] = icmp eq i32 [[TMP4]], 0
; CHECK-NEXT: br i1 [[TOBOOL_EPIL_1]], label [[FOR_INC_EPIL_1:%.*]], label [[IF_THEN_EPIL_1:%.*]]
; CHECK: if.then.epil.1:
; CHECK-NEXT: [[ARRAYIDX1_EPIL_1:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC_EPIL]]
; CHECK-NEXT: [[TMP5:%.*]] = load i32, i32* [[ARRAYIDX1_EPIL_1]], align 4
; CHECK-NEXT: [[ADD_EPIL_1:%.*]] = add i32 [[TMP5]], [[TEMP_1_EPIL]]
; CHECK-NEXT: br label [[FOR_INC_EPIL_1]]
; CHECK: for.inc.epil.1:
; CHECK-NEXT: [[TEMP_1_EPIL_1:%.*]] = phi i32 [ [[ADD_EPIL_1]], [[IF_THEN_EPIL_1]] ], [ [[TEMP_1_EPIL]], [[FOR_BODY_EPIL_1]] ]
; CHECK-NEXT: [[INC_EPIL_1:%.*]] = add nuw i32 [[INC_EPIL]], 1
; CHECK-NEXT: [[EPIL_ITER_CMP_1:%.*]] = icmp ne i32 2, [[XTRAITER]]
; CHECK-NEXT: br i1 [[EPIL_ITER_CMP_1]], label [[FOR_BODY_EPIL_2:%.*]], label [[FOR_COND_CLEANUP_LOOPEXIT_EPILOG_LCSSA]]
; CHECK: for.body.epil.2:
; CHECK-NEXT: [[ARRAYIDX_EPIL_2:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC_EPIL_1]]
; CHECK-NEXT: [[TMP6:%.*]] = load i32, i32* [[ARRAYIDX_EPIL_2]], align 4
; CHECK-NEXT: [[TOBOOL_EPIL_2:%.*]] = icmp eq i32 [[TMP6]], 0
; CHECK-NEXT: br i1 [[TOBOOL_EPIL_2]], label [[FOR_INC_EPIL_2:%.*]], label [[IF_THEN_EPIL_2:%.*]]
; CHECK: if.then.epil.2:
; CHECK-NEXT: [[ARRAYIDX1_EPIL_2:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC_EPIL_1]]
; CHECK-NEXT: [[TMP7:%.*]] = load i32, i32* [[ARRAYIDX1_EPIL_2]], align 4
; CHECK-NEXT: [[ADD_EPIL_2:%.*]] = add i32 [[TMP7]], [[TEMP_1_EPIL_1]]
; CHECK-NEXT: br label [[FOR_INC_EPIL_2]]
; CHECK: for.inc.epil.2:
; CHECK-NEXT: [[TEMP_1_EPIL_2:%.*]] = phi i32 [ [[ADD_EPIL_2]], [[IF_THEN_EPIL_2]] ], [ [[TEMP_1_EPIL_1]], [[FOR_BODY_EPIL_2]] ]
; CHECK-NEXT: br label [[FOR_COND_CLEANUP_LOOPEXIT_EPILOG_LCSSA]]
; CHECK: for.cond.cleanup.loopexit.epilog-lcssa:
; CHECK-NEXT: [[TEMP_1_LCSSA_PH1:%.*]] = phi i32 [ [[TEMP_1_EPIL]], [[FOR_INC_EPIL]] ], [ [[TEMP_1_EPIL_1]], [[FOR_INC_EPIL_1]] ], [ [[TEMP_1_EPIL_2]], [[FOR_INC_EPIL_2]] ]
; CHECK-NEXT: br label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK: for.cond.cleanup.loopexit:
; CHECK-NEXT: [[TEMP_1_LCSSA:%.*]] = phi i32 [ [[TEMP_1_LCSSA_PH]], [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA]] ], [ [[TEMP_1_LCSSA_PH1]], [[FOR_COND_CLEANUP_LOOPEXIT_EPILOG_LCSSA]] ]
; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: [[TEMP_0_LCSSA:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[TEMP_1_LCSSA]], [[FOR_COND_CLEANUP_LOOPEXIT]] ]
; CHECK-NEXT: store i32 [[TEMP_0_LCSSA]], i32* [[OUTPUT:%.*]], align 4
; CHECK-NEXT: ret void
; CHECK: for.body:
; CHECK-NEXT: [[J_010:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER_NEW]] ], [ [[INC_3]], [[FOR_INC_3]] ]
; CHECK-NEXT: [[TEMP_09:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER_NEW]] ], [ [[TEMP_1_3]], [[FOR_INC_3]] ]
; CHECK-NEXT: [[NITER:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER_NEW]] ], [ [[NITER_NEXT_3:%.*]], [[FOR_INC_3]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[J_010]]
; CHECK-NEXT: [[TMP8:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[TMP8]], 0
; CHECK-NEXT: br i1 [[TOBOOL]], label [[FOR_INC:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[J_010]]
; CHECK-NEXT: [[TMP9:%.*]] = load i32, i32* [[ARRAYIDX1]], align 4
; CHECK-NEXT: [[ADD:%.*]] = add i32 [[TMP9]], [[TEMP_09]]
; CHECK-NEXT: br label [[FOR_INC]]
; CHECK: for.inc:
; CHECK-NEXT: [[TEMP_1:%.*]] = phi i32 [ [[ADD]], [[IF_THEN]] ], [ [[TEMP_09]], [[FOR_BODY]] ]
; CHECK-NEXT: [[INC:%.*]] = add nuw nsw i32 [[J_010]], 1
; CHECK-NEXT: [[NITER_NEXT:%.*]] = add nuw nsw i32 [[NITER]], 1
; CHECK-NEXT: [[ARRAYIDX_1:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC]]
; CHECK-NEXT: [[TMP10:%.*]] = load i32, i32* [[ARRAYIDX_1]], align 4
; CHECK-NEXT: [[TOBOOL_1:%.*]] = icmp eq i32 [[TMP10]], 0
; CHECK-NEXT: br i1 [[TOBOOL_1]], label [[FOR_INC_1:%.*]], label [[IF_THEN_1:%.*]]
; CHECK: if.then.1:
; CHECK-NEXT: [[ARRAYIDX1_1:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC]]
; CHECK-NEXT: [[TMP11:%.*]] = load i32, i32* [[ARRAYIDX1_1]], align 4
; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[TMP11]], [[TEMP_1]]
; CHECK-NEXT: br label [[FOR_INC_1]]
; CHECK: for.inc.1:
; CHECK-NEXT: [[TEMP_1_1:%.*]] = phi i32 [ [[ADD_1]], [[IF_THEN_1]] ], [ [[TEMP_1]], [[FOR_INC]] ]
; CHECK-NEXT: [[INC_1:%.*]] = add nuw nsw i32 [[INC]], 1
; CHECK-NEXT: [[NITER_NEXT_1:%.*]] = add nuw nsw i32 [[NITER_NEXT]], 1
; CHECK-NEXT: [[ARRAYIDX_2:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC_1]]
; CHECK-NEXT: [[TMP12:%.*]] = load i32, i32* [[ARRAYIDX_2]], align 4
; CHECK-NEXT: [[TOBOOL_2:%.*]] = icmp eq i32 [[TMP12]], 0
; CHECK-NEXT: br i1 [[TOBOOL_2]], label [[FOR_INC_2:%.*]], label [[IF_THEN_2:%.*]]
; CHECK: if.then.2:
; CHECK-NEXT: [[ARRAYIDX1_2:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC_1]]
; CHECK-NEXT: [[TMP13:%.*]] = load i32, i32* [[ARRAYIDX1_2]], align 4
; CHECK-NEXT: [[ADD_2:%.*]] = add i32 [[TMP13]], [[TEMP_1_1]]
; CHECK-NEXT: br label [[FOR_INC_2]]
; CHECK: for.inc.2:
; CHECK-NEXT: [[TEMP_1_2:%.*]] = phi i32 [ [[ADD_2]], [[IF_THEN_2]] ], [ [[TEMP_1_1]], [[FOR_INC_1]] ]
; CHECK-NEXT: [[INC_2:%.*]] = add nuw nsw i32 [[INC_1]], 1
; CHECK-NEXT: [[NITER_NEXT_2:%.*]] = add nuw nsw i32 [[NITER_NEXT_1]], 1
; CHECK-NEXT: [[ARRAYIDX_3:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC_2]]
; CHECK-NEXT: [[TMP14:%.*]] = load i32, i32* [[ARRAYIDX_3]], align 4
; CHECK-NEXT: [[TOBOOL_3:%.*]] = icmp eq i32 [[TMP14]], 0
; CHECK-NEXT: br i1 [[TOBOOL_3]], label [[FOR_INC_3]], label [[IF_THEN_3:%.*]]
; CHECK: if.then.3:
; CHECK-NEXT: [[ARRAYIDX1_3:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC_2]]
; CHECK-NEXT: [[TMP15:%.*]] = load i32, i32* [[ARRAYIDX1_3]], align 4
; CHECK-NEXT: [[ADD_3:%.*]] = add i32 [[TMP15]], [[TEMP_1_2]]
; CHECK-NEXT: br label [[FOR_INC_3]]
; CHECK: for.inc.3:
; CHECK-NEXT: [[TEMP_1_3]] = phi i32 [ [[ADD_3]], [[IF_THEN_3]] ], [ [[TEMP_1_2]], [[FOR_INC_2]] ]
; CHECK-NEXT: [[INC_3]] = add nuw i32 [[INC_2]], 1
; CHECK-NEXT: [[NITER_NEXT_3]] = add i32 [[NITER_NEXT_2]], 1
; CHECK-NEXT: [[NITER_NCMP_3:%.*]] = icmp eq i32 [[NITER_NEXT_3]], [[UNROLL_ITER]]
; CHECK-NEXT: br i1 [[NITER_NCMP_3]], label [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA_LOOPEXIT]], label [[FOR_BODY]]
;
i32* nocapture readonly %Condition,
i32* nocapture readonly %Input,
i32 %MaxJ) {
entry:
%cmp8 = icmp eq i32 %MaxJ, 0
br i1 %cmp8, label %for.cond.cleanup, label %for.body.preheader
for.body.preheader: ; preds = %entry
br label %for.body
for.cond.cleanup: ; preds = %for.inc, %entry
%temp.0.lcssa = phi i32 [ 0, %entry ], [ %temp.1, %for.inc ]
store i32 %temp.0.lcssa, i32* %Output, align 4
ret void
for.body: ; preds = %for.body.preheader, %for.inc
%j.010 = phi i32 [ %inc, %for.inc ], [ 0, %for.body.preheader ]
%temp.09 = phi i32 [ %temp.1, %for.inc ], [ 0, %for.body.preheader ]
%arrayidx = getelementptr inbounds i32, i32* %Condition, i32 %j.010
%0 = load i32, i32* %arrayidx, align 4
%tobool = icmp eq i32 %0, 0
br i1 %tobool, label %for.inc, label %if.then
if.then: ; preds = %for.body
%arrayidx1 = getelementptr inbounds i32, i32* %Input, i32 %j.010
%1 = load i32, i32* %arrayidx1, align 4
%add = add i32 %1, %temp.09
br label %for.inc
for.inc: ; preds = %for.body, %if.then
%temp.1 = phi i32 [ %add, %if.then ], [ %temp.09, %for.body ]
%inc = add nuw i32 %j.010, 1
%exitcond = icmp eq i32 %inc, %MaxJ
br i1 %exitcond, label %for.cond.cleanup, label %for.body
}
define void @test_two_exits(i32* nocapture %Output,
;
; CHECK-LABEL: @test_two_exits(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP14:%.*]] = icmp eq i32 [[MAXJ:%.*]], 0
; CHECK-NEXT: br i1 [[CMP14]], label [[CLEANUP:%.*]], label [[FOR_BODY_PREHEADER:%.*]]
; CHECK: for.body.preheader:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[J_016:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INC_3:%.*]], [[IF_END_3:%.*]] ]
; CHECK-NEXT: [[TEMP_015:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[TEMP_0_ADD_3:%.*]], [[IF_END_3]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[INPUT:%.*]], i32 [[J_016]]
; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt i32 [[TMP0]], 65535
; CHECK-NEXT: br i1 [[CMP1]], label [[CLEANUP_LOOPEXIT:%.*]], label [[IF_END:%.*]]
; CHECK: if.end:
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[CONDITION:%.*]], i32 [[J_016]]
; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX2]], align 4
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[TMP1]], 0
; CHECK-NEXT: [[ADD:%.*]] = select i1 [[TOBOOL]], i32 0, i32 [[TMP0]]
; CHECK-NEXT: [[TEMP_0_ADD:%.*]] = add i32 [[ADD]], [[TEMP_015]]
; CHECK-NEXT: [[INC:%.*]] = add nuw nsw i32 [[J_016]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[INC]], [[MAXJ]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY_1:%.*]], label [[CLEANUP_LOOPEXIT]]
; CHECK: for.body.1:
; CHECK-NEXT: [[ARRAYIDX_1:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC]]
; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX_1]], align 4
; CHECK-NEXT: [[CMP1_1:%.*]] = icmp ugt i32 [[TMP2]], 65535
; CHECK-NEXT: br i1 [[CMP1_1]], label [[CLEANUP_LOOPEXIT]], label [[IF_END_1:%.*]]
; CHECK: if.end.1:
; CHECK-NEXT: [[ARRAYIDX2_1:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC]]
; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[ARRAYIDX2_1]], align 4
; CHECK-NEXT: [[TOBOOL_1:%.*]] = icmp eq i32 [[TMP3]], 0
; CHECK-NEXT: [[ADD_1:%.*]] = select i1 [[TOBOOL_1]], i32 0, i32 [[TMP2]]
; CHECK-NEXT: [[TEMP_0_ADD_1:%.*]] = add i32 [[ADD_1]], [[TEMP_0_ADD]]
; CHECK-NEXT: [[INC_1:%.*]] = add nuw nsw i32 [[INC]], 1
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[INC_1]], [[MAXJ]]
; CHECK-NEXT: br i1 [[CMP_1]], label [[FOR_BODY_2:%.*]], label [[CLEANUP_LOOPEXIT]]
; CHECK: for.body.2:
; CHECK-NEXT: [[ARRAYIDX_2:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC_1]]
; CHECK-NEXT: [[TMP4:%.*]] = load i32, i32* [[ARRAYIDX_2]], align 4
; CHECK-NEXT: [[CMP1_2:%.*]] = icmp ugt i32 [[TMP4]], 65535
; CHECK-NEXT: br i1 [[CMP1_2]], label [[CLEANUP_LOOPEXIT]], label [[IF_END_2:%.*]]
; CHECK: if.end.2:
; CHECK-NEXT: [[ARRAYIDX2_2:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC_1]]
; CHECK-NEXT: [[TMP5:%.*]] = load i32, i32* [[ARRAYIDX2_2]], align 4
; CHECK-NEXT: [[TOBOOL_2:%.*]] = icmp eq i32 [[TMP5]], 0
; CHECK-NEXT: [[ADD_2:%.*]] = select i1 [[TOBOOL_2]], i32 0, i32 [[TMP4]]
; CHECK-NEXT: [[TEMP_0_ADD_2:%.*]] = add i32 [[ADD_2]], [[TEMP_0_ADD_1]]
; CHECK-NEXT: [[INC_2:%.*]] = add nuw nsw i32 [[INC_1]], 1
; CHECK-NEXT: [[CMP_2:%.*]] = icmp ult i32 [[INC_2]], [[MAXJ]]
; CHECK-NEXT: br i1 [[CMP_2]], label [[FOR_BODY_3:%.*]], label [[CLEANUP_LOOPEXIT]]
; CHECK: for.body.3:
; CHECK-NEXT: [[ARRAYIDX_3:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC_2]]
; CHECK-NEXT: [[TMP6:%.*]] = load i32, i32* [[ARRAYIDX_3]], align 4
; CHECK-NEXT: [[CMP1_3:%.*]] = icmp ugt i32 [[TMP6]], 65535
; CHECK-NEXT: br i1 [[CMP1_3]], label [[CLEANUP_LOOPEXIT]], label [[IF_END_3]]
; CHECK: if.end.3:
; CHECK-NEXT: [[ARRAYIDX2_3:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC_2]]
; CHECK-NEXT: [[TMP7:%.*]] = load i32, i32* [[ARRAYIDX2_3]], align 4
; CHECK-NEXT: [[TOBOOL_3:%.*]] = icmp eq i32 [[TMP7]], 0
; CHECK-NEXT: [[ADD_3:%.*]] = select i1 [[TOBOOL_3]], i32 0, i32 [[TMP6]]
; CHECK-NEXT: [[TEMP_0_ADD_3]] = add i32 [[ADD_3]], [[TEMP_0_ADD_2]]
; CHECK-NEXT: [[INC_3]] = add nuw i32 [[INC_2]], 1
; CHECK-NEXT: [[CMP_3:%.*]] = icmp ult i32 [[INC_3]], [[MAXJ]]
; CHECK-NEXT: br i1 [[CMP_3]], label [[FOR_BODY]], label [[CLEANUP_LOOPEXIT]]
; CHECK: cleanup.loopexit:
; CHECK-NEXT: [[TEMP_0_LCSSA_PH:%.*]] = phi i32 [ [[TEMP_0_ADD]], [[IF_END]] ], [ [[TEMP_015]], [[FOR_BODY]] ], [ [[TEMP_0_ADD]], [[FOR_BODY_1]] ], [ [[TEMP_0_ADD_1]], [[IF_END_1]] ], [ [[TEMP_0_ADD_1]], [[FOR_BODY_2]] ], [ [[TEMP_0_ADD_2]], [[IF_END_2]] ], [ [[TEMP_0_ADD_2]], [[FOR_BODY_3]] ], [ [[TEMP_0_ADD_3]], [[IF_END_3]] ]
; CHECK-NEXT: br label [[CLEANUP]]
; CHECK: cleanup:
; CHECK-NEXT: [[TEMP_0_LCSSA:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[TEMP_0_LCSSA_PH]], [[CLEANUP_LOOPEXIT]] ]
; CHECK-NEXT: store i32 [[TEMP_0_LCSSA]], i32* [[OUTPUT:%.*]], align 4
; CHECK-NEXT: ret void
;
i32* nocapture readonly %Condition,
i32* nocapture readonly %Input,
i32 %MaxJ) {
entry:
%cmp14 = icmp eq i32 %MaxJ, 0
br i1 %cmp14, label %cleanup, label %for.body.preheader
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %if.end
%j.016 = phi i32 [ %inc, %if.end ], [ 0, %for.body.preheader ]
%temp.015 = phi i32 [ %temp.0.add, %if.end ], [ 0, %for.body.preheader ]
%arrayidx = getelementptr inbounds i32, i32* %Input, i32 %j.016
%0 = load i32, i32* %arrayidx, align 4
%cmp1 = icmp ugt i32 %0, 65535
br i1 %cmp1, label %cleanup, label %if.end
if.end: ; preds = %for.body
%arrayidx2 = getelementptr inbounds i32, i32* %Condition, i32 %j.016
%1 = load i32, i32* %arrayidx2, align 4
%tobool = icmp eq i32 %1, 0
%add = select i1 %tobool, i32 0, i32 %0
%temp.0.add = add i32 %add, %temp.015
%inc = add nuw i32 %j.016, 1
%cmp = icmp ult i32 %inc, %MaxJ
br i1 %cmp, label %for.body, label %cleanup
cleanup: ; preds = %if.end, %for.body, %entry
%temp.0.lcssa = phi i32 [ 0, %entry ], [ %temp.015, %for.body ], [ %temp.0.add, %if.end ]
store i32 %temp.0.lcssa, i32* %Output, align 4
ret void
}
define void @test_three_exits(i32* nocapture %Output,
;
; CHECK-LABEL: @test_three_exits(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP20:%.*]] = icmp eq i32 [[MAXJ:%.*]], 0
; CHECK-NEXT: br i1 [[CMP20]], label [[CLEANUP:%.*]], label [[FOR_BODY_PREHEADER:%.*]]
; CHECK: for.body.preheader:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[J_022:%.*]] = phi i32 [ [[INC:%.*]], [[IF_END5:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ]
; CHECK-NEXT: [[TEMP_021:%.*]] = phi i32 [ [[TEMP_0_ADD:%.*]], [[IF_END5]] ], [ 0, [[FOR_BODY_PREHEADER]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[CONDITION:%.*]], i32 [[J_022]]
; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt i32 [[TMP0]], 65535
; CHECK-NEXT: br i1 [[CMP1]], label [[CLEANUP_LOOPEXIT:%.*]], label [[IF_END:%.*]]
; CHECK: if.end:
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[INPUT:%.*]], i32 [[J_022]]
; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX2]], align 4
; CHECK-NEXT: [[CMP3:%.*]] = icmp ugt i32 [[TMP1]], 65535
; CHECK-NEXT: br i1 [[CMP3]], label [[CLEANUP_LOOPEXIT]], label [[IF_END5]]
; CHECK: if.end5:
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[TMP0]], 0
; CHECK-NEXT: [[ADD:%.*]] = select i1 [[TOBOOL]], i32 0, i32 [[TMP1]]
; CHECK-NEXT: [[TEMP_0_ADD]] = add i32 [[ADD]], [[TEMP_021]]
; CHECK-NEXT: [[INC]] = add nuw i32 [[J_022]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[INC]], [[MAXJ]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[CLEANUP_LOOPEXIT]]
; CHECK: cleanup.loopexit:
; CHECK-NEXT: [[TEMP_0_LCSSA_PH:%.*]] = phi i32 [ [[TEMP_0_ADD]], [[IF_END5]] ], [ [[TEMP_021]], [[FOR_BODY]] ], [ [[TEMP_021]], [[IF_END]] ]
; CHECK-NEXT: br label [[CLEANUP]]
; CHECK: cleanup:
; CHECK-NEXT: [[TEMP_0_LCSSA:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[TEMP_0_LCSSA_PH]], [[CLEANUP_LOOPEXIT]] ]
; CHECK-NEXT: store i32 [[TEMP_0_LCSSA]], i32* [[OUTPUT:%.*]], align 4
; CHECK-NEXT: ret void
;
i32* nocapture readonly %Condition,
i32* nocapture readonly %Input,
i32 %MaxJ) {
entry:
%cmp20 = icmp eq i32 %MaxJ, 0
br i1 %cmp20, label %cleanup, label %for.body.preheader
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %if.end5
%j.022 = phi i32 [ %inc, %if.end5 ], [ 0, %for.body.preheader ]
%temp.021 = phi i32 [ %temp.0.add, %if.end5 ], [ 0, %for.body.preheader ]
%arrayidx = getelementptr inbounds i32, i32* %Condition, i32 %j.022
%0 = load i32, i32* %arrayidx, align 4
%cmp1 = icmp ugt i32 %0, 65535
br i1 %cmp1, label %cleanup, label %if.end
if.end: ; preds = %for.body
%arrayidx2 = getelementptr inbounds i32, i32* %Input, i32 %j.022
%1 = load i32, i32* %arrayidx2, align 4
%cmp3 = icmp ugt i32 %1, 65535
br i1 %cmp3, label %cleanup, label %if.end5
if.end5: ; preds = %if.end
%tobool = icmp eq i32 %0, 0
%add = select i1 %tobool, i32 0, i32 %1
%temp.0.add = add i32 %add, %temp.021
%inc = add nuw i32 %j.022, 1
%cmp = icmp ult i32 %inc, %MaxJ
br i1 %cmp, label %for.body, label %cleanup
cleanup: ; preds = %if.end5, %for.body, %if.end, %entry
%temp.0.lcssa = phi i32 [ 0, %entry ], [ %temp.021, %if.end ], [ %temp.021, %for.body ], [ %temp.0.add, %if.end5 ]
store i32 %temp.0.lcssa, i32* %Output, align 4
ret void
}
define void @test_four_blocks(i32* nocapture %Output,
;
; CHECK-LABEL: @test_four_blocks(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP25:%.*]] = icmp ugt i32 [[MAXJ:%.*]], 1
; CHECK-NEXT: br i1 [[CMP25]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK: for.body.lr.ph:
; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, i32* [[INPUT:%.*]], align 4
; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[MAXJ]], -1
; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[MAXJ]], -2
; CHECK-NEXT: [[XTRAITER:%.*]] = and i32 [[TMP0]], 3
; CHECK-NEXT: [[TMP2:%.*]] = icmp ult i32 [[TMP1]], 3
; CHECK-NEXT: br i1 [[TMP2]], label [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA:%.*]], label [[FOR_BODY_LR_PH_NEW:%.*]]
; CHECK: for.body.lr.ph.new:
; CHECK-NEXT: [[UNROLL_ITER:%.*]] = sub i32 [[TMP0]], [[XTRAITER]]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.cond.cleanup.loopexit.unr-lcssa.loopexit:
; CHECK-NEXT: [[TEMP_1_LCSSA_PH_PH:%.*]] = phi i32 [ [[TEMP_1_3:%.*]], [[FOR_INC_3:%.*]] ]
; CHECK-NEXT: [[DOTUNR_PH:%.*]] = phi i32 [ [[TMP23:%.*]], [[FOR_INC_3]] ]
; CHECK-NEXT: [[J_027_UNR_PH:%.*]] = phi i32 [ [[INC_3:%.*]], [[FOR_INC_3]] ]
; CHECK-NEXT: [[TEMP_026_UNR_PH:%.*]] = phi i32 [ [[TEMP_1_3]], [[FOR_INC_3]] ]
; CHECK-NEXT: br label [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA]]
; CHECK: for.cond.cleanup.loopexit.unr-lcssa:
; CHECK-NEXT: [[TEMP_1_LCSSA_PH:%.*]] = phi i32 [ undef, [[FOR_BODY_LR_PH]] ], [ [[TEMP_1_LCSSA_PH_PH]], [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA_LOOPEXIT:%.*]] ]
; CHECK-NEXT: [[DOTUNR:%.*]] = phi i32 [ [[DOTPRE]], [[FOR_BODY_LR_PH]] ], [ [[DOTUNR_PH]], [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA_LOOPEXIT]] ]
; CHECK-NEXT: [[J_027_UNR:%.*]] = phi i32 [ 1, [[FOR_BODY_LR_PH]] ], [ [[J_027_UNR_PH]], [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA_LOOPEXIT]] ]
; CHECK-NEXT: [[TEMP_026_UNR:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[TEMP_026_UNR_PH]], [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA_LOOPEXIT]] ]
; CHECK-NEXT: [[LCMP_MOD:%.*]] = icmp ne i32 [[XTRAITER]], 0
; CHECK-NEXT: br i1 [[LCMP_MOD]], label [[FOR_BODY_EPIL_PREHEADER:%.*]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]]
; CHECK: for.body.epil.preheader:
; CHECK-NEXT: br label [[FOR_BODY_EPIL:%.*]]
; CHECK: for.body.epil:
; CHECK-NEXT: [[ARRAYIDX_EPIL:%.*]] = getelementptr inbounds i32, i32* [[CONDITION:%.*]], i32 [[J_027_UNR]]
; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[ARRAYIDX_EPIL]], align 4
; CHECK-NEXT: [[CMP1_EPIL:%.*]] = icmp ugt i32 [[TMP3]], 65535
; CHECK-NEXT: [[ARRAYIDX2_EPIL:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[J_027_UNR]]
; CHECK-NEXT: [[TMP4:%.*]] = load i32, i32* [[ARRAYIDX2_EPIL]], align 4
; CHECK-NEXT: [[CMP4_EPIL:%.*]] = icmp ugt i32 [[TMP4]], [[DOTUNR]]
; CHECK-NEXT: br i1 [[CMP1_EPIL]], label [[IF_THEN_EPIL:%.*]], label [[IF_ELSE_EPIL:%.*]]
; CHECK: if.else.epil:
; CHECK-NEXT: [[NOT_CMP4_EPIL:%.*]] = xor i1 [[CMP4_EPIL]], true
; CHECK-NEXT: [[SUB_EPIL:%.*]] = sext i1 [[NOT_CMP4_EPIL]] to i32
; CHECK-NEXT: [[SUB10_SINK_EPIL:%.*]] = add i32 [[J_027_UNR]], [[SUB_EPIL]]
; CHECK-NEXT: [[ARRAYIDX11_EPIL:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[SUB10_SINK_EPIL]]
; CHECK-NEXT: [[TMP5:%.*]] = load i32, i32* [[ARRAYIDX11_EPIL]], align 4
; CHECK-NEXT: [[SUB13_EPIL:%.*]] = sub i32 [[TEMP_026_UNR]], [[TMP5]]
; CHECK-NEXT: br label [[FOR_INC_EPIL:%.*]]
; CHECK: if.then.epil:
; CHECK-NEXT: [[COND_EPIL:%.*]] = zext i1 [[CMP4_EPIL]] to i32
; CHECK-NEXT: [[ADD_EPIL:%.*]] = add i32 [[TEMP_026_UNR]], [[COND_EPIL]]
; CHECK-NEXT: br label [[FOR_INC_EPIL]]
; CHECK: for.inc.epil:
; CHECK-NEXT: [[TEMP_1_EPIL:%.*]] = phi i32 [ [[ADD_EPIL]], [[IF_THEN_EPIL]] ], [ [[SUB13_EPIL]], [[IF_ELSE_EPIL]] ]
; CHECK-NEXT: [[INC_EPIL:%.*]] = add nuw i32 [[J_027_UNR]], 1
; CHECK-NEXT: [[EPIL_ITER_CMP:%.*]] = icmp ne i32 1, [[XTRAITER]]
; CHECK-NEXT: br i1 [[EPIL_ITER_CMP]], label [[FOR_BODY_EPIL_1:%.*]], label [[FOR_COND_CLEANUP_LOOPEXIT_EPILOG_LCSSA:%.*]]
; CHECK: for.body.epil.1:
; CHECK-NEXT: [[ARRAYIDX_EPIL_1:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC_EPIL]]
; CHECK-NEXT: [[TMP6:%.*]] = load i32, i32* [[ARRAYIDX_EPIL_1]], align 4
; CHECK-NEXT: [[CMP1_EPIL_1:%.*]] = icmp ugt i32 [[TMP6]], 65535
; CHECK-NEXT: [[ARRAYIDX2_EPIL_1:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC_EPIL]]
; CHECK-NEXT: [[TMP7:%.*]] = load i32, i32* [[ARRAYIDX2_EPIL_1]], align 4
; CHECK-NEXT: [[CMP4_EPIL_1:%.*]] = icmp ugt i32 [[TMP7]], [[TMP4]]
; CHECK-NEXT: br i1 [[CMP1_EPIL_1]], label [[IF_THEN_EPIL_1:%.*]], label [[IF_ELSE_EPIL_1:%.*]]
; CHECK: if.else.epil.1:
; CHECK-NEXT: [[NOT_CMP4_EPIL_1:%.*]] = xor i1 [[CMP4_EPIL_1]], true
; CHECK-NEXT: [[SUB_EPIL_1:%.*]] = sext i1 [[NOT_CMP4_EPIL_1]] to i32
; CHECK-NEXT: [[SUB10_SINK_EPIL_1:%.*]] = add i32 [[INC_EPIL]], [[SUB_EPIL_1]]
; CHECK-NEXT: [[ARRAYIDX11_EPIL_1:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[SUB10_SINK_EPIL_1]]
; CHECK-NEXT: [[TMP8:%.*]] = load i32, i32* [[ARRAYIDX11_EPIL_1]], align 4
; CHECK-NEXT: [[SUB13_EPIL_1:%.*]] = sub i32 [[TEMP_1_EPIL]], [[TMP8]]
; CHECK-NEXT: br label [[FOR_INC_EPIL_1:%.*]]
; CHECK: if.then.epil.1:
; CHECK-NEXT: [[COND_EPIL_1:%.*]] = zext i1 [[CMP4_EPIL_1]] to i32
; CHECK-NEXT: [[ADD_EPIL_1:%.*]] = add i32 [[TEMP_1_EPIL]], [[COND_EPIL_1]]
; CHECK-NEXT: br label [[FOR_INC_EPIL_1]]
; CHECK: for.inc.epil.1:
; CHECK-NEXT: [[TEMP_1_EPIL_1:%.*]] = phi i32 [ [[ADD_EPIL_1]], [[IF_THEN_EPIL_1]] ], [ [[SUB13_EPIL_1]], [[IF_ELSE_EPIL_1]] ]
; CHECK-NEXT: [[INC_EPIL_1:%.*]] = add nuw i32 [[INC_EPIL]], 1
; CHECK-NEXT: [[EPIL_ITER_CMP_1:%.*]] = icmp ne i32 2, [[XTRAITER]]
; CHECK-NEXT: br i1 [[EPIL_ITER_CMP_1]], label [[FOR_BODY_EPIL_2:%.*]], label [[FOR_COND_CLEANUP_LOOPEXIT_EPILOG_LCSSA]]
; CHECK: for.body.epil.2:
; CHECK-NEXT: [[ARRAYIDX_EPIL_2:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC_EPIL_1]]
; CHECK-NEXT: [[TMP9:%.*]] = load i32, i32* [[ARRAYIDX_EPIL_2]], align 4
; CHECK-NEXT: [[CMP1_EPIL_2:%.*]] = icmp ugt i32 [[TMP9]], 65535
; CHECK-NEXT: [[ARRAYIDX2_EPIL_2:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC_EPIL_1]]
; CHECK-NEXT: [[TMP10:%.*]] = load i32, i32* [[ARRAYIDX2_EPIL_2]], align 4
; CHECK-NEXT: [[CMP4_EPIL_2:%.*]] = icmp ugt i32 [[TMP10]], [[TMP7]]
; CHECK-NEXT: br i1 [[CMP1_EPIL_2]], label [[IF_THEN_EPIL_2:%.*]], label [[IF_ELSE_EPIL_2:%.*]]
; CHECK: if.else.epil.2:
; CHECK-NEXT: [[NOT_CMP4_EPIL_2:%.*]] = xor i1 [[CMP4_EPIL_2]], true
; CHECK-NEXT: [[SUB_EPIL_2:%.*]] = sext i1 [[NOT_CMP4_EPIL_2]] to i32
; CHECK-NEXT: [[SUB10_SINK_EPIL_2:%.*]] = add i32 [[INC_EPIL_1]], [[SUB_EPIL_2]]
; CHECK-NEXT: [[ARRAYIDX11_EPIL_2:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[SUB10_SINK_EPIL_2]]
; CHECK-NEXT: [[TMP11:%.*]] = load i32, i32* [[ARRAYIDX11_EPIL_2]], align 4
; CHECK-NEXT: [[SUB13_EPIL_2:%.*]] = sub i32 [[TEMP_1_EPIL_1]], [[TMP11]]
; CHECK-NEXT: br label [[FOR_INC_EPIL_2:%.*]]
; CHECK: if.then.epil.2:
; CHECK-NEXT: [[COND_EPIL_2:%.*]] = zext i1 [[CMP4_EPIL_2]] to i32
; CHECK-NEXT: [[ADD_EPIL_2:%.*]] = add i32 [[TEMP_1_EPIL_1]], [[COND_EPIL_2]]
; CHECK-NEXT: br label [[FOR_INC_EPIL_2]]
; CHECK: for.inc.epil.2:
; CHECK-NEXT: [[TEMP_1_EPIL_2:%.*]] = phi i32 [ [[ADD_EPIL_2]], [[IF_THEN_EPIL_2]] ], [ [[SUB13_EPIL_2]], [[IF_ELSE_EPIL_2]] ]
; CHECK-NEXT: br label [[FOR_COND_CLEANUP_LOOPEXIT_EPILOG_LCSSA]]
; CHECK: for.cond.cleanup.loopexit.epilog-lcssa:
; CHECK-NEXT: [[TEMP_1_LCSSA_PH1:%.*]] = phi i32 [ [[TEMP_1_EPIL]], [[FOR_INC_EPIL]] ], [ [[TEMP_1_EPIL_1]], [[FOR_INC_EPIL_1]] ], [ [[TEMP_1_EPIL_2]], [[FOR_INC_EPIL_2]] ]
; CHECK-NEXT: br label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK: for.cond.cleanup.loopexit:
; CHECK-NEXT: [[TEMP_1_LCSSA:%.*]] = phi i32 [ [[TEMP_1_LCSSA_PH]], [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA]] ], [ [[TEMP_1_LCSSA_PH1]], [[FOR_COND_CLEANUP_LOOPEXIT_EPILOG_LCSSA]] ]
; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: [[TEMP_0_LCSSA:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[TEMP_1_LCSSA]], [[FOR_COND_CLEANUP_LOOPEXIT]] ]
; CHECK-NEXT: store i32 [[TEMP_0_LCSSA]], i32* [[OUTPUT:%.*]], align 4
; CHECK-NEXT: ret void
; CHECK: for.body:
; CHECK-NEXT: [[TMP12:%.*]] = phi i32 [ [[DOTPRE]], [[FOR_BODY_LR_PH_NEW]] ], [ [[TMP23]], [[FOR_INC_3]] ]
; CHECK-NEXT: [[J_027:%.*]] = phi i32 [ 1, [[FOR_BODY_LR_PH_NEW]] ], [ [[INC_3]], [[FOR_INC_3]] ]
; CHECK-NEXT: [[TEMP_026:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH_NEW]] ], [ [[TEMP_1_3]], [[FOR_INC_3]] ]
; CHECK-NEXT: [[NITER:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH_NEW]] ], [ [[NITER_NEXT_3:%.*]], [[FOR_INC_3]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[J_027]]
; CHECK-NEXT: [[TMP13:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt i32 [[TMP13]], 65535
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[J_027]]
; CHECK-NEXT: [[TMP14:%.*]] = load i32, i32* [[ARRAYIDX2]], align 4
; CHECK-NEXT: [[CMP4:%.*]] = icmp ugt i32 [[TMP14]], [[TMP12]]
; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[COND:%.*]] = zext i1 [[CMP4]] to i32
; CHECK-NEXT: [[ADD:%.*]] = add i32 [[TEMP_026]], [[COND]]
; CHECK-NEXT: br label [[FOR_INC:%.*]]
; CHECK: if.else:
; CHECK-NEXT: [[NOT_CMP4:%.*]] = xor i1 [[CMP4]], true
; CHECK-NEXT: [[SUB:%.*]] = sext i1 [[NOT_CMP4]] to i32
; CHECK-NEXT: [[SUB10_SINK:%.*]] = add i32 [[J_027]], [[SUB]]
; CHECK-NEXT: [[ARRAYIDX11:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[SUB10_SINK]]
; CHECK-NEXT: [[TMP15:%.*]] = load i32, i32* [[ARRAYIDX11]], align 4
; CHECK-NEXT: [[SUB13:%.*]] = sub i32 [[TEMP_026]], [[TMP15]]
; CHECK-NEXT: br label [[FOR_INC]]
; CHECK: for.inc:
; CHECK-NEXT: [[TEMP_1:%.*]] = phi i32 [ [[ADD]], [[IF_THEN]] ], [ [[SUB13]], [[IF_ELSE]] ]
; CHECK-NEXT: [[INC:%.*]] = add nuw nsw i32 [[J_027]], 1
; CHECK-NEXT: [[NITER_NEXT:%.*]] = add nuw nsw i32 [[NITER]], 1
; CHECK-NEXT: [[ARRAYIDX_1:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC]]
; CHECK-NEXT: [[TMP16:%.*]] = load i32, i32* [[ARRAYIDX_1]], align 4
; CHECK-NEXT: [[CMP1_1:%.*]] = icmp ugt i32 [[TMP16]], 65535
; CHECK-NEXT: [[ARRAYIDX2_1:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC]]
; CHECK-NEXT: [[TMP17:%.*]] = load i32, i32* [[ARRAYIDX2_1]], align 4
; CHECK-NEXT: [[CMP4_1:%.*]] = icmp ugt i32 [[TMP17]], [[TMP14]]
; CHECK-NEXT: br i1 [[CMP1_1]], label [[IF_THEN_1:%.*]], label [[IF_ELSE_1:%.*]]
; CHECK: if.else.1:
; CHECK-NEXT: [[NOT_CMP4_1:%.*]] = xor i1 [[CMP4_1]], true
; CHECK-NEXT: [[SUB_1:%.*]] = sext i1 [[NOT_CMP4_1]] to i32
; CHECK-NEXT: [[SUB10_SINK_1:%.*]] = add i32 [[INC]], [[SUB_1]]
; CHECK-NEXT: [[ARRAYIDX11_1:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[SUB10_SINK_1]]
; CHECK-NEXT: [[TMP18:%.*]] = load i32, i32* [[ARRAYIDX11_1]], align 4
; CHECK-NEXT: [[SUB13_1:%.*]] = sub i32 [[TEMP_1]], [[TMP18]]
; CHECK-NEXT: br label [[FOR_INC_1:%.*]]
; CHECK: if.then.1:
; CHECK-NEXT: [[COND_1:%.*]] = zext i1 [[CMP4_1]] to i32
; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[TEMP_1]], [[COND_1]]
; CHECK-NEXT: br label [[FOR_INC_1]]
; CHECK: for.inc.1:
; CHECK-NEXT: [[TEMP_1_1:%.*]] = phi i32 [ [[ADD_1]], [[IF_THEN_1]] ], [ [[SUB13_1]], [[IF_ELSE_1]] ]
; CHECK-NEXT: [[INC_1:%.*]] = add nuw nsw i32 [[INC]], 1
; CHECK-NEXT: [[NITER_NEXT_1:%.*]] = add nuw nsw i32 [[NITER_NEXT]], 1
; CHECK-NEXT: [[ARRAYIDX_2:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC_1]]
; CHECK-NEXT: [[TMP19:%.*]] = load i32, i32* [[ARRAYIDX_2]], align 4
; CHECK-NEXT: [[CMP1_2:%.*]] = icmp ugt i32 [[TMP19]], 65535
; CHECK-NEXT: [[ARRAYIDX2_2:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC_1]]
; CHECK-NEXT: [[TMP20:%.*]] = load i32, i32* [[ARRAYIDX2_2]], align 4
; CHECK-NEXT: [[CMP4_2:%.*]] = icmp ugt i32 [[TMP20]], [[TMP17]]
; CHECK-NEXT: br i1 [[CMP1_2]], label [[IF_THEN_2:%.*]], label [[IF_ELSE_2:%.*]]
; CHECK: if.else.2:
; CHECK-NEXT: [[NOT_CMP4_2:%.*]] = xor i1 [[CMP4_2]], true
; CHECK-NEXT: [[SUB_2:%.*]] = sext i1 [[NOT_CMP4_2]] to i32
; CHECK-NEXT: [[SUB10_SINK_2:%.*]] = add i32 [[INC_1]], [[SUB_2]]
; CHECK-NEXT: [[ARRAYIDX11_2:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[SUB10_SINK_2]]
; CHECK-NEXT: [[TMP21:%.*]] = load i32, i32* [[ARRAYIDX11_2]], align 4
; CHECK-NEXT: [[SUB13_2:%.*]] = sub i32 [[TEMP_1_1]], [[TMP21]]
; CHECK-NEXT: br label [[FOR_INC_2:%.*]]
; CHECK: if.then.2:
; CHECK-NEXT: [[COND_2:%.*]] = zext i1 [[CMP4_2]] to i32
; CHECK-NEXT: [[ADD_2:%.*]] = add i32 [[TEMP_1_1]], [[COND_2]]
; CHECK-NEXT: br label [[FOR_INC_2]]
; CHECK: for.inc.2:
; CHECK-NEXT: [[TEMP_1_2:%.*]] = phi i32 [ [[ADD_2]], [[IF_THEN_2]] ], [ [[SUB13_2]], [[IF_ELSE_2]] ]
; CHECK-NEXT: [[INC_2:%.*]] = add nuw i32 [[INC_1]], 1
; CHECK-NEXT: [[NITER_NEXT_2:%.*]] = add nuw nsw i32 [[NITER_NEXT_1]], 1
; CHECK-NEXT: [[ARRAYIDX_3:%.*]] = getelementptr inbounds i32, i32* [[CONDITION]], i32 [[INC_2]]
; CHECK-NEXT: [[TMP22:%.*]] = load i32, i32* [[ARRAYIDX_3]], align 4
; CHECK-NEXT: [[CMP1_3:%.*]] = icmp ugt i32 [[TMP22]], 65535
; CHECK-NEXT: [[ARRAYIDX2_3:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[INC_2]]
; CHECK-NEXT: [[TMP23]] = load i32, i32* [[ARRAYIDX2_3]], align 4
; CHECK-NEXT: [[CMP4_3:%.*]] = icmp ugt i32 [[TMP23]], [[TMP20]]
; CHECK-NEXT: br i1 [[CMP1_3]], label [[IF_THEN_3:%.*]], label [[IF_ELSE_3:%.*]]
; CHECK: if.else.3:
; CHECK-NEXT: [[NOT_CMP4_3:%.*]] = xor i1 [[CMP4_3]], true
; CHECK-NEXT: [[SUB_3:%.*]] = sext i1 [[NOT_CMP4_3]] to i32
; CHECK-NEXT: [[SUB10_SINK_3:%.*]] = add i32 [[INC_2]], [[SUB_3]]
; CHECK-NEXT: [[ARRAYIDX11_3:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[SUB10_SINK_3]]
; CHECK-NEXT: [[TMP24:%.*]] = load i32, i32* [[ARRAYIDX11_3]], align 4
; CHECK-NEXT: [[SUB13_3:%.*]] = sub i32 [[TEMP_1_2]], [[TMP24]]
; CHECK-NEXT: br label [[FOR_INC_3]]
; CHECK: if.then.3:
; CHECK-NEXT: [[COND_3:%.*]] = zext i1 [[CMP4_3]] to i32
; CHECK-NEXT: [[ADD_3:%.*]] = add i32 [[TEMP_1_2]], [[COND_3]]
; CHECK-NEXT: br label [[FOR_INC_3]]
; CHECK: for.inc.3:
; CHECK-NEXT: [[TEMP_1_3]] = phi i32 [ [[ADD_3]], [[IF_THEN_3]] ], [ [[SUB13_3]], [[IF_ELSE_3]] ]
; CHECK-NEXT: [[INC_3]] = add nuw nsw i32 [[INC_2]], 1
; CHECK-NEXT: [[NITER_NEXT_3]] = add i32 [[NITER_NEXT_2]], 1
; CHECK-NEXT: [[NITER_NCMP_3:%.*]] = icmp eq i32 [[NITER_NEXT_3]], [[UNROLL_ITER]]
; CHECK-NEXT: br i1 [[NITER_NCMP_3]], label [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA_LOOPEXIT]], label [[FOR_BODY]]
;
i32* nocapture readonly %Condition,
i32* nocapture readonly %Input,
i32 %MaxJ) {
entry:
%cmp25 = icmp ugt i32 %MaxJ, 1
br i1 %cmp25, label %for.body.lr.ph, label %for.cond.cleanup
for.body.lr.ph: ; preds = %entry
%.pre = load i32, i32* %Input, align 4
br label %for.body
for.cond.cleanup: ; preds = %for.inc, %entry
%temp.0.lcssa = phi i32 [ 0, %entry ], [ %temp.1, %for.inc ]
store i32 %temp.0.lcssa, i32* %Output, align 4
ret void
for.body: ; preds = %for.inc, %for.body.lr.ph
%0 = phi i32 [ %.pre, %for.body.lr.ph ], [ %2, %for.inc ]
%j.027 = phi i32 [ 1, %for.body.lr.ph ], [ %inc, %for.inc ]
%temp.026 = phi i32 [ 0, %for.body.lr.ph ], [ %temp.1, %for.inc ]
%arrayidx = getelementptr inbounds i32, i32* %Condition, i32 %j.027
%1 = load i32, i32* %arrayidx, align 4
%cmp1 = icmp ugt i32 %1, 65535
%arrayidx2 = getelementptr inbounds i32, i32* %Input, i32 %j.027
%2 = load i32, i32* %arrayidx2, align 4
%cmp4 = icmp ugt i32 %2, %0
br i1 %cmp1, label %if.then, label %if.else
if.then: ; preds = %for.body
%cond = zext i1 %cmp4 to i32
%add = add i32 %temp.026, %cond
br label %for.inc
if.else: ; preds = %for.body
%not.cmp4 = xor i1 %cmp4, true
%sub = sext i1 %not.cmp4 to i32
%sub10.sink = add i32 %j.027, %sub
%arrayidx11 = getelementptr inbounds i32, i32* %Input, i32 %sub10.sink
%3 = load i32, i32* %arrayidx11, align 4
%sub13 = sub i32 %temp.026, %3
br label %for.inc
for.inc: ; preds = %if.then, %if.else
%temp.1 = phi i32 [ %add, %if.then ], [ %sub13, %if.else ]
%inc = add nuw i32 %j.027, 1
%exitcond = icmp eq i32 %inc, %MaxJ
br i1 %exitcond, label %for.cond.cleanup, label %for.body
}
define void @test_five_blocks(i32* nocapture %Output,
;
; CHECK-LABEL: @test_five_blocks(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP24:%.*]] = icmp ugt i32 [[MAXJ:%.*]], 1
; CHECK-NEXT: br i1 [[CMP24]], label [[FOR_BODY_PREHEADER:%.*]], label [[CLEANUP:%.*]]
; CHECK: for.body.preheader:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[J_026:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_INC:%.*]] ], [ 1, [[FOR_BODY_PREHEADER]] ]
; CHECK-NEXT: [[TEMP_025:%.*]] = phi i32 [ [[TEMP_1:%.*]], [[FOR_INC]] ], [ 0, [[FOR_BODY_PREHEADER]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[INPUT:%.*]], i32 [[J_026]]
; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
; CHECK-NEXT: [[ADD:%.*]] = add i32 [[TMP0]], [[TEMP_025]]
; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt i32 [[ADD]], 16777215
; CHECK-NEXT: br i1 [[CMP1]], label [[CLEANUP_LOOPEXIT:%.*]], label [[IF_END:%.*]]
; CHECK: if.end:
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[CONDITION:%.*]], i32 [[J_026]]
; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX2]], align 4
; CHECK-NEXT: [[CMP3:%.*]] = icmp ugt i32 [[TMP1]], 65535
; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_ELSE:%.*]]
; CHECK: if.then4:
; CHECK-NEXT: [[SUB:%.*]] = add i32 [[J_026]], -1
; CHECK-NEXT: [[ARRAYIDX6:%.*]] = getelementptr inbounds i32, i32* [[INPUT]], i32 [[SUB]]
; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX6]], align 4
; CHECK-NEXT: [[CMP7:%.*]] = icmp ugt i32 [[TMP0]], [[TMP2]]
; CHECK-NEXT: [[COND:%.*]] = zext i1 [[CMP7]] to i32
; CHECK-NEXT: [[ADD8:%.*]] = add i32 [[ADD]], [[COND]]
; CHECK-NEXT: br label [[FOR_INC]]
; CHECK: if.else:
; CHECK-NEXT: [[AND:%.*]] = and i32 [[ADD]], [[TMP0]]
; CHECK-NEXT: br label [[FOR_INC]]
; CHECK: for.inc:
; CHECK-NEXT: [[TEMP_1]] = phi i32 [ [[ADD8]], [[IF_THEN4]] ], [ [[AND]], [[IF_ELSE]] ]
; CHECK-NEXT: [[INC]] = add nuw i32 [[J_026]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[INC]], [[MAXJ]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[CLEANUP_LOOPEXIT]]
; CHECK: cleanup.loopexit:
; CHECK-NEXT: [[TEMP_2_PH:%.*]] = phi i32 [ [[TEMP_1]], [[FOR_INC]] ], [ [[ADD]], [[FOR_BODY]] ]
; CHECK-NEXT: br label [[CLEANUP]]
; CHECK: cleanup:
; CHECK-NEXT: [[TEMP_2:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[TEMP_2_PH]], [[CLEANUP_LOOPEXIT]] ]
; CHECK-NEXT: store i32 [[TEMP_2]], i32* [[OUTPUT:%.*]], align 4
; CHECK-NEXT: ret void
;
i32* nocapture readonly %Condition,
i32* nocapture readonly %Input,
i32 %MaxJ) {
entry:
%cmp24 = icmp ugt i32 %MaxJ, 1
br i1 %cmp24, label %for.body.preheader, label %cleanup
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.inc
%j.026 = phi i32 [ %inc, %for.inc ], [ 1, %for.body.preheader ]
%temp.025 = phi i32 [ %temp.1, %for.inc ], [ 0, %for.body.preheader ]
%arrayidx = getelementptr inbounds i32, i32* %Input, i32 %j.026
%0 = load i32, i32* %arrayidx, align 4
%add = add i32 %0, %temp.025
%cmp1 = icmp ugt i32 %add, 16777215
br i1 %cmp1, label %cleanup, label %if.end
if.end: ; preds = %for.body
%arrayidx2 = getelementptr inbounds i32, i32* %Condition, i32 %j.026
%1 = load i32, i32* %arrayidx2, align 4
%cmp3 = icmp ugt i32 %1, 65535
br i1 %cmp3, label %if.then4, label %if.else
if.then4: ; preds = %if.end
%sub = add i32 %j.026, -1
%arrayidx6 = getelementptr inbounds i32, i32* %Input, i32 %sub
%2 = load i32, i32* %arrayidx6, align 4
%cmp7 = icmp ugt i32 %0, %2
%cond = zext i1 %cmp7 to i32
%add8 = add i32 %add, %cond
br label %for.inc
if.else: ; preds = %if.end
%and = and i32 %add, %0
br label %for.inc
for.inc: ; preds = %if.then4, %if.else
%temp.1 = phi i32 [ %add8, %if.then4 ], [ %and, %if.else ]
%inc = add nuw i32 %j.026, 1
%cmp = icmp ult i32 %inc, %MaxJ
br i1 %cmp, label %for.body, label %cleanup
cleanup: ; preds = %for.inc, %for.body, %entry
%temp.2 = phi i32 [ 0, %entry ], [ %add, %for.body ], [ %temp.1, %for.inc ]
store i32 %temp.2, i32* %Output, align 4
ret void
}
%struct.Node = type { %struct.Node*, i32 }
define void @iterate_inc(%struct.Node* %n, i32 %limit) {
;
; CHECK-LABEL: @iterate_inc(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TOBOOL5:%.*]] = icmp eq %struct.Node* [[N:%.*]], null
; CHECK-NEXT: br i1 [[TOBOOL5]], label [[WHILE_END:%.*]], label [[LAND_RHS_PREHEADER:%.*]]
; CHECK: land.rhs.preheader:
; CHECK-NEXT: br label [[LAND_RHS:%.*]]
; CHECK: land.rhs:
; CHECK-NEXT: [[LIST_ADDR_06:%.*]] = phi %struct.Node* [ [[N]], [[LAND_RHS_PREHEADER]] ], [ [[TMP11:%.*]], [[WHILE_BODY_3:%.*]] ]
; CHECK-NEXT: [[VAL:%.*]] = getelementptr inbounds [[STRUCT_NODE:%.*]], %struct.Node* [[LIST_ADDR_06]], i32 0, i32 1
; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[VAL]], align 4
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[TMP0]], [[LIMIT:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[WHILE_BODY:%.*]], label [[WHILE_END_LOOPEXIT:%.*]]
; CHECK: while.body:
; CHECK-NEXT: [[INC:%.*]] = add nsw i32 [[TMP0]], 1
; CHECK-NEXT: store i32 [[INC]], i32* [[VAL]], align 4
; CHECK-NEXT: [[TMP1:%.*]] = bitcast %struct.Node* [[LIST_ADDR_06]] to %struct.Node**
; CHECK-NEXT: [[TMP2:%.*]] = load %struct.Node*, %struct.Node** [[TMP1]], align 4
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq %struct.Node* [[TMP2]], null
; CHECK-NEXT: br i1 [[TOBOOL]], label [[WHILE_END_LOOPEXIT]], label [[LAND_RHS_1:%.*]]
; CHECK: land.rhs.1:
; CHECK-NEXT: [[VAL_1:%.*]] = getelementptr inbounds [[STRUCT_NODE]], %struct.Node* [[TMP2]], i32 0, i32 1
; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[VAL_1]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp slt i32 [[TMP3]], [[LIMIT]]
; CHECK-NEXT: br i1 [[CMP_1]], label [[WHILE_BODY_1:%.*]], label [[WHILE_END_LOOPEXIT]]
; CHECK: while.body.1:
; CHECK-NEXT: [[INC_1:%.*]] = add nsw i32 [[TMP3]], 1
; CHECK-NEXT: store i32 [[INC_1]], i32* [[VAL_1]], align 4
; CHECK-NEXT: [[TMP4:%.*]] = bitcast %struct.Node* [[TMP2]] to %struct.Node**
; CHECK-NEXT: [[TMP5:%.*]] = load %struct.Node*, %struct.Node** [[TMP4]], align 4
; CHECK-NEXT: [[TOBOOL_1:%.*]] = icmp eq %struct.Node* [[TMP5]], null
; CHECK-NEXT: br i1 [[TOBOOL_1]], label [[WHILE_END_LOOPEXIT]], label [[LAND_RHS_2:%.*]]
; CHECK: land.rhs.2:
; CHECK-NEXT: [[VAL_2:%.*]] = getelementptr inbounds [[STRUCT_NODE]], %struct.Node* [[TMP5]], i32 0, i32 1
; CHECK-NEXT: [[TMP6:%.*]] = load i32, i32* [[VAL_2]], align 4
; CHECK-NEXT: [[CMP_2:%.*]] = icmp slt i32 [[TMP6]], [[LIMIT]]
; CHECK-NEXT: br i1 [[CMP_2]], label [[WHILE_BODY_2:%.*]], label [[WHILE_END_LOOPEXIT]]
; CHECK: while.body.2:
; CHECK-NEXT: [[INC_2:%.*]] = add nsw i32 [[TMP6]], 1
; CHECK-NEXT: store i32 [[INC_2]], i32* [[VAL_2]], align 4
; CHECK-NEXT: [[TMP7:%.*]] = bitcast %struct.Node* [[TMP5]] to %struct.Node**
; CHECK-NEXT: [[TMP8:%.*]] = load %struct.Node*, %struct.Node** [[TMP7]], align 4
; CHECK-NEXT: [[TOBOOL_2:%.*]] = icmp eq %struct.Node* [[TMP8]], null
; CHECK-NEXT: br i1 [[TOBOOL_2]], label [[WHILE_END_LOOPEXIT]], label [[LAND_RHS_3:%.*]]
; CHECK: land.rhs.3:
; CHECK-NEXT: [[VAL_3:%.*]] = getelementptr inbounds [[STRUCT_NODE]], %struct.Node* [[TMP8]], i32 0, i32 1
; CHECK-NEXT: [[TMP9:%.*]] = load i32, i32* [[VAL_3]], align 4
; CHECK-NEXT: [[CMP_3:%.*]] = icmp slt i32 [[TMP9]], [[LIMIT]]
; CHECK-NEXT: br i1 [[CMP_3]], label [[WHILE_BODY_3]], label [[WHILE_END_LOOPEXIT]]
; CHECK: while.body.3:
; CHECK-NEXT: [[INC_3:%.*]] = add nsw i32 [[TMP9]], 1
; CHECK-NEXT: store i32 [[INC_3]], i32* [[VAL_3]], align 4
; CHECK-NEXT: [[TMP10:%.*]] = bitcast %struct.Node* [[TMP8]] to %struct.Node**
; CHECK-NEXT: [[TMP11]] = load %struct.Node*, %struct.Node** [[TMP10]], align 4
; CHECK-NEXT: [[TOBOOL_3:%.*]] = icmp eq %struct.Node* [[TMP11]], null
; CHECK-NEXT: br i1 [[TOBOOL_3]], label [[WHILE_END_LOOPEXIT]], label [[LAND_RHS]]
; CHECK: while.end.loopexit:
; CHECK-NEXT: br label [[WHILE_END]]
; CHECK: while.end:
; CHECK-NEXT: ret void
;
entry:
%tobool5 = icmp eq %struct.Node* %n, null
br i1 %tobool5, label %while.end, label %land.rhs.preheader
land.rhs.preheader: ; preds = %entry
br label %land.rhs
land.rhs: ; preds = %land.rhs.preheader, %while.body
%list.addr.06 = phi %struct.Node* [ %2, %while.body ], [ %n, %land.rhs.preheader ]
%val = getelementptr inbounds %struct.Node, %struct.Node* %list.addr.06, i32 0, i32 1
%0 = load i32, i32* %val, align 4
%cmp = icmp slt i32 %0, %limit
br i1 %cmp, label %while.body, label %while.end
while.body: ; preds = %land.rhs
%inc = add nsw i32 %0, 1
store i32 %inc, i32* %val, align 4
%1 = bitcast %struct.Node* %list.addr.06 to %struct.Node**
%2 = load %struct.Node*, %struct.Node** %1, align 4
%tobool = icmp eq %struct.Node* %2, null
br i1 %tobool, label %while.end, label %land.rhs
while.end: ; preds = %land.rhs, %while.body, %entry
ret void
}
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