20d798bd47
This reverts commit 1fbdbb5595.
All known issues surfaced by this patch should have been fixed now.
The fixes included fixing issues with SCEV expansion in LV and DA's
reliance on LCSSA phis.
370 lines
14 KiB
LLVM
370 lines
14 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -loop-reduce -S | FileCheck %s
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i686-pc-windows-msvc"
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declare i32 @_except_handler3(...)
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declare i32 @__CxxFrameHandler3(...)
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declare void @external(i32*)
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declare void @reserve()
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define void @f() personality i32 (...)* @_except_handler3 {
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; CHECK-LABEL: @f(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[THROW:%.*]]
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; CHECK: throw:
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; CHECK-NEXT: invoke void @reserve()
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; CHECK-NEXT: to label [[THROW]] unwind label [[PAD:%.*]]
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; CHECK: pad:
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; CHECK-NEXT: [[CS:%.*]] = catchswitch within none [label %unreachable] unwind label [[BLAH2:%.*]]
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; CHECK: unreachable:
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; CHECK-NEXT: [[TMP0:%.*]] = catchpad within [[CS]] []
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; CHECK-NEXT: unreachable
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; CHECK: blah2:
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; CHECK-NEXT: [[CLEANUPPADI4_I_I_I:%.*]] = cleanuppad within none []
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; CHECK-NEXT: br label [[LOOP_BODY:%.*]]
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; CHECK: loop_body:
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; CHECK-NEXT: [[LSR_IV:%.*]] = phi i32 [ [[LSR_IV_NEXT:%.*]], [[ITER:%.*]] ], [ 0, [[BLAH2]] ]
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; CHECK-NEXT: [[LSR_IV_NEXT]] = add nuw nsw i32 [[LSR_IV]], -1
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; CHECK-NEXT: [[LSR_IV_NEXT1:%.*]] = inttoptr i32 [[LSR_IV_NEXT]] to i8*
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; CHECK-NEXT: [[TMP100:%.*]] = icmp eq i8* [[LSR_IV_NEXT1]], null
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; CHECK-NEXT: br i1 [[TMP100]], label [[UNWIND_OUT:%.*]], label [[ITER]]
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; CHECK: iter:
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; CHECK-NEXT: br i1 true, label [[UNWIND_OUT]], label [[LOOP_BODY]]
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; CHECK: unwind_out:
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; CHECK-NEXT: cleanupret from [[CLEANUPPADI4_I_I_I]] unwind to caller
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;
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entry:
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br label %throw
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throw: ; preds = %throw, %entry
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%tmp96 = getelementptr inbounds i8, i8* undef, i32 1
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invoke void @reserve()
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to label %throw unwind label %pad
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pad: ; preds = %throw
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%phi2 = phi i8* [ %tmp96, %throw ]
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%cs = catchswitch within none [label %unreachable] unwind label %blah2
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unreachable:
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catchpad within %cs []
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unreachable
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blah2:
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%cleanuppadi4.i.i.i = cleanuppad within none []
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br label %loop_body
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loop_body: ; preds = %iter, %pad
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%tmp99 = phi i8* [ %tmp101, %iter ], [ %phi2, %blah2 ]
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%tmp100 = icmp eq i8* %tmp99, undef
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br i1 %tmp100, label %unwind_out, label %iter
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iter: ; preds = %loop_body
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%tmp101 = getelementptr inbounds i8, i8* %tmp99, i32 1
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br i1 undef, label %unwind_out, label %loop_body
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unwind_out: ; preds = %iter, %loop_body
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cleanupret from %cleanuppadi4.i.i.i unwind to caller
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}
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define void @g() personality i32 (...)* @_except_handler3 {
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; CHECK-LABEL: @g(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[THROW:%.*]]
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; CHECK: throw:
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; CHECK-NEXT: invoke void @reserve()
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; CHECK-NEXT: to label [[THROW]] unwind label [[PAD:%.*]]
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; CHECK: pad:
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; CHECK-NEXT: [[CS:%.*]] = catchswitch within none [label [[UNREACHABLE:%.*]], label %blah] unwind to caller
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; CHECK: unreachable:
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; CHECK-NEXT: [[TMP0:%.*]] = catchpad within [[CS]] []
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; CHECK-NEXT: unreachable
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; CHECK: blah:
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; CHECK-NEXT: [[CATCHPAD:%.*]] = catchpad within [[CS]] []
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; CHECK-NEXT: br label [[LOOP_BODY:%.*]]
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; CHECK: unwind_out:
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; CHECK-NEXT: catchret from [[CATCHPAD]] to label [[LEAVE:%.*]]
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; CHECK: leave:
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; CHECK-NEXT: ret void
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; CHECK: loop_body:
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; CHECK-NEXT: [[LSR_IV:%.*]] = phi i32 [ [[LSR_IV_NEXT:%.*]], [[ITER:%.*]] ], [ 0, [[BLAH:%.*]] ]
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; CHECK-NEXT: [[LSR_IV_NEXT]] = add nuw nsw i32 [[LSR_IV]], -1
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; CHECK-NEXT: [[LSR_IV_NEXT1:%.*]] = inttoptr i32 [[LSR_IV_NEXT]] to i8*
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; CHECK-NEXT: [[TMP100:%.*]] = icmp eq i8* [[LSR_IV_NEXT1]], null
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; CHECK-NEXT: br i1 [[TMP100]], label [[UNWIND_OUT:%.*]], label [[ITER]]
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; CHECK: iter:
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; CHECK-NEXT: br i1 true, label [[UNWIND_OUT]], label [[LOOP_BODY]]
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;
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entry:
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br label %throw
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throw: ; preds = %throw, %entry
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%tmp96 = getelementptr inbounds i8, i8* undef, i32 1
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invoke void @reserve()
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to label %throw unwind label %pad
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pad:
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%phi2 = phi i8* [ %tmp96, %throw ]
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%cs = catchswitch within none [label %unreachable, label %blah] unwind to caller
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unreachable:
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catchpad within %cs []
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unreachable
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blah:
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%catchpad = catchpad within %cs []
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br label %loop_body
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unwind_out:
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catchret from %catchpad to label %leave
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leave:
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ret void
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loop_body: ; preds = %iter, %pad
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%tmp99 = phi i8* [ %tmp101, %iter ], [ %phi2, %blah ]
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%tmp100 = icmp eq i8* %tmp99, undef
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br i1 %tmp100, label %unwind_out, label %iter
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iter: ; preds = %loop_body
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%tmp101 = getelementptr inbounds i8, i8* %tmp99, i32 1
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br i1 undef, label %unwind_out, label %loop_body
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}
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define void @h() personality i32 (...)* @_except_handler3 {
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; CHECK-LABEL: @h(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[THROW:%.*]]
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; CHECK: throw:
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; CHECK-NEXT: invoke void @reserve()
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; CHECK-NEXT: to label [[THROW]] unwind label [[PAD:%.*]]
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; CHECK: pad:
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; CHECK-NEXT: [[CS:%.*]] = catchswitch within none [label [[UNREACHABLE:%.*]], label %blug] unwind to caller
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; CHECK: unreachable:
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; CHECK-NEXT: [[TMP0:%.*]] = catchpad within [[CS]] []
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; CHECK-NEXT: unreachable
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; CHECK: blug:
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; CHECK-NEXT: [[CATCHPAD:%.*]] = catchpad within [[CS]] []
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; CHECK-NEXT: br label [[LOOP_BODY:%.*]]
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; CHECK: unwind_out:
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; CHECK-NEXT: catchret from [[CATCHPAD]] to label [[LEAVE:%.*]]
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; CHECK: leave:
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; CHECK-NEXT: ret void
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; CHECK: loop_body:
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; CHECK-NEXT: [[LSR_IV:%.*]] = phi i32 [ [[LSR_IV_NEXT:%.*]], [[ITER:%.*]] ], [ 0, [[BLUG:%.*]] ]
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; CHECK-NEXT: [[LSR_IV_NEXT]] = add nuw nsw i32 [[LSR_IV]], -1
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; CHECK-NEXT: [[LSR_IV_NEXT1:%.*]] = inttoptr i32 [[LSR_IV_NEXT]] to i8*
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; CHECK-NEXT: [[TMP100:%.*]] = icmp eq i8* [[LSR_IV_NEXT1]], null
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; CHECK-NEXT: br i1 [[TMP100]], label [[UNWIND_OUT:%.*]], label [[ITER]]
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; CHECK: iter:
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; CHECK-NEXT: br i1 true, label [[UNWIND_OUT]], label [[LOOP_BODY]]
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;
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entry:
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br label %throw
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throw: ; preds = %throw, %entry
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%tmp96 = getelementptr inbounds i8, i8* undef, i32 1
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invoke void @reserve()
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to label %throw unwind label %pad
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pad:
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%cs = catchswitch within none [label %unreachable, label %blug] unwind to caller
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unreachable:
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catchpad within %cs []
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unreachable
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blug:
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%phi2 = phi i8* [ %tmp96, %pad ]
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%catchpad = catchpad within %cs []
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br label %loop_body
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unwind_out:
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catchret from %catchpad to label %leave
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leave:
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ret void
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loop_body: ; preds = %iter, %pad
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%tmp99 = phi i8* [ %tmp101, %iter ], [ %phi2, %blug ]
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%tmp100 = icmp eq i8* %tmp99, undef
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br i1 %tmp100, label %unwind_out, label %iter
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iter: ; preds = %loop_body
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%tmp101 = getelementptr inbounds i8, i8* %tmp99, i32 1
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br i1 undef, label %unwind_out, label %loop_body
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}
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define void @i() personality i32 (...)* @_except_handler3 {
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; CHECK-LABEL: @i(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[THROW:%.*]]
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; CHECK: throw:
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; CHECK-NEXT: invoke void @reserve()
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; CHECK-NEXT: to label [[THROW]] unwind label [[CATCHPAD:%.*]]
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; CHECK: catchpad:
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; CHECK-NEXT: [[CS:%.*]] = catchswitch within none [label %cp_body] unwind label [[CLEANUPPAD:%.*]]
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; CHECK: cp_body:
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; CHECK-NEXT: [[TMP0:%.*]] = catchpad within [[CS]] []
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; CHECK-NEXT: br label [[LOOP_HEAD:%.*]]
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; CHECK: cleanuppad:
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; CHECK-NEXT: [[TMP1:%.*]] = cleanuppad within none []
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; CHECK-NEXT: br label [[LOOP_HEAD]]
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; CHECK: loop_head:
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; CHECK-NEXT: br label [[LOOP_BODY:%.*]]
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; CHECK: loop_body:
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; CHECK-NEXT: [[LSR_IV:%.*]] = phi i32 [ [[LSR_IV_NEXT:%.*]], [[ITER:%.*]] ], [ 0, [[LOOP_HEAD]] ]
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; CHECK-NEXT: [[LSR_IV_NEXT]] = add nuw nsw i32 [[LSR_IV]], -1
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; CHECK-NEXT: [[LSR_IV_NEXT1:%.*]] = inttoptr i32 [[LSR_IV_NEXT]] to i8*
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; CHECK-NEXT: [[TMP100:%.*]] = icmp eq i8* [[LSR_IV_NEXT1]], null
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; CHECK-NEXT: br i1 [[TMP100]], label [[UNWIND_OUT:%.*]], label [[ITER]]
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; CHECK: iter:
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; CHECK-NEXT: br i1 true, label [[UNWIND_OUT]], label [[LOOP_BODY]]
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; CHECK: unwind_out:
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; CHECK-NEXT: unreachable
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;
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entry:
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br label %throw
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throw: ; preds = %throw, %entry
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%tmp96 = getelementptr inbounds i8, i8* undef, i32 1
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invoke void @reserve()
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to label %throw unwind label %catchpad
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catchpad: ; preds = %throw
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%phi2 = phi i8* [ %tmp96, %throw ]
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%cs = catchswitch within none [label %cp_body] unwind label %cleanuppad
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cp_body:
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catchpad within %cs []
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br label %loop_head
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cleanuppad:
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cleanuppad within none []
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br label %loop_head
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loop_head:
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br label %loop_body
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loop_body: ; preds = %iter, %catchpad
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%tmp99 = phi i8* [ %tmp101, %iter ], [ %phi2, %loop_head ]
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%tmp100 = icmp eq i8* %tmp99, undef
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br i1 %tmp100, label %unwind_out, label %iter
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iter: ; preds = %loop_body
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%tmp101 = getelementptr inbounds i8, i8* %tmp99, i32 1
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br i1 undef, label %unwind_out, label %loop_body
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unwind_out: ; preds = %iter, %loop_body
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unreachable
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}
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define void @test1(i32* %b, i32* %c) personality i32 (...)* @__CxxFrameHandler3 {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_COND:%.*]]
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; CHECK: for.cond:
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; CHECK-NEXT: [[D_0:%.*]] = phi i32* [ [[B:%.*]], [[ENTRY:%.*]] ], [ [[INCDEC_PTR:%.*]], [[FOR_INC:%.*]] ]
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; CHECK-NEXT: invoke void @external(i32* [[D_0]])
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; CHECK-NEXT: to label [[FOR_INC]] unwind label [[CATCH_DISPATCH:%.*]]
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; CHECK: for.inc:
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; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i32, i32* [[D_0]], i32 1
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; CHECK-NEXT: br label [[FOR_COND]]
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; CHECK: catch.dispatch:
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; CHECK-NEXT: [[CS:%.*]] = catchswitch within none [label %catch] unwind label [[CATCH_DISPATCH_2:%.*]]
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; CHECK: catch:
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; CHECK-NEXT: [[TMP0:%.*]] = catchpad within [[CS]] [i8* null, i32 64, i8* null]
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; CHECK-NEXT: catchret from [[TMP0]] to label [[TRY_CONT:%.*]]
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; CHECK: try.cont:
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; CHECK-NEXT: invoke void @external(i32* [[C:%.*]])
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; CHECK-NEXT: to label [[TRY_CONT_7:%.*]] unwind label [[CATCH_DISPATCH_2]]
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; CHECK: catch.dispatch.2:
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; CHECK-NEXT: [[E_0:%.*]] = phi i32* [ [[C]], [[TRY_CONT]] ], [ [[B]], [[CATCH_DISPATCH]] ]
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; CHECK-NEXT: [[CS2:%.*]] = catchswitch within none [label %catch.4] unwind to caller
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; CHECK: catch.4:
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; CHECK-NEXT: [[TMP1:%.*]] = catchpad within [[CS2]] [i8* null, i32 64, i8* null]
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; CHECK-NEXT: unreachable
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; CHECK: try.cont.7:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%d.0 = phi i32* [ %b, %entry ], [ %incdec.ptr, %for.inc ]
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invoke void @external(i32* %d.0)
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to label %for.inc unwind label %catch.dispatch
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for.inc: ; preds = %for.cond
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%incdec.ptr = getelementptr inbounds i32, i32* %d.0, i32 1
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br label %for.cond
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catch.dispatch: ; preds = %for.cond
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%cs = catchswitch within none [label %catch] unwind label %catch.dispatch.2
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catch: ; preds = %catch.dispatch
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%0 = catchpad within %cs [i8* null, i32 64, i8* null]
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catchret from %0 to label %try.cont
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try.cont: ; preds = %catch
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invoke void @external(i32* %c)
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to label %try.cont.7 unwind label %catch.dispatch.2
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catch.dispatch.2: ; preds = %try.cont, %catchendblock
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%e.0 = phi i32* [ %c, %try.cont ], [ %b, %catch.dispatch ]
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%cs2 = catchswitch within none [label %catch.4] unwind to caller
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catch.4: ; preds = %catch.dispatch.2
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catchpad within %cs2 [i8* null, i32 64, i8* null]
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unreachable
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try.cont.7: ; preds = %try.cont
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ret void
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}
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define i32 @test2() personality i32 (...)* @_except_handler3 {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_INC:%.*]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: invoke void @reserve()
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; CHECK-NEXT: to label [[FOR_INC]] unwind label [[CATCH_DISPATCH:%.*]]
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; CHECK: catch.dispatch:
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; CHECK-NEXT: [[TMP18:%.*]] = catchswitch within none [label %catch.handler] unwind to caller
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; CHECK: catch.handler:
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; CHECK-NEXT: [[PHI_LCSSA:%.*]] = phi i32 [ [[PHI]], [[CATCH_DISPATCH]] ]
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; CHECK-NEXT: [[TMP19:%.*]] = catchpad within [[TMP18]] [i8* null]
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; CHECK-NEXT: catchret from [[TMP19]] to label [[DONE:%.*]]
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; CHECK: done:
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; CHECK-NEXT: ret i32 [[PHI_LCSSA]]
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; CHECK: for.inc:
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; CHECK-NEXT: [[INC]] = add i32 [[PHI]], 1
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; CHECK-NEXT: br label [[FOR_BODY]]
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;
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entry:
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br label %for.body
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for.body: ; preds = %for.inc, %entry
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%phi = phi i32 [ %inc, %for.inc ], [ 0, %entry ]
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invoke void @reserve()
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to label %for.inc unwind label %catch.dispatch
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catch.dispatch: ; preds = %for.body
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%tmp18 = catchswitch within none [label %catch.handler] unwind to caller
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catch.handler: ; preds = %catch.dispatch
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%phi.lcssa = phi i32 [ %phi, %catch.dispatch ]
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%tmp19 = catchpad within %tmp18 [i8* null]
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catchret from %tmp19 to label %done
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done:
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ret i32 %phi.lcssa
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for.inc: ; preds = %for.body
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%inc = add i32 %phi, 1
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br label %for.body
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}
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