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clang-p2996/llvm/test/Transforms/LoopInterchange/pr57148.ll
Nikita Popov eecb99c5f6 [Tests] Add disjoint flag to some tests (NFC) 
These tests rely on SCEV looking recognizing an "or" with no common
bits as an "add". Add the disjoint flag to relevant or instructions
in preparation for switching SCEV to use the flag instead of the
ValueTracking query. The IR with disjoint flag matches what
InstCombine would produce.
2023-12-05 14:09:36 +01:00

264 lines
13 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=loop-interchange -cache-line-size=4 -loop-interchange-threshold=-100 -verify-dom-info -verify-loop-info -verify-scev -verify-loop-lcssa -S | FileCheck %s
; Make sure the loops are in LCSSA form after loop interchange,
; and loop interchange does not hit assertion errors and crash.
target triple = "x86_64-unknown-linux-gnu"
@b = external global [512 x [4 x i32]], align 1
@c = external global [2 x [4 x i32]], align 1
@d = external global [1024 x [512 x [4 x i32]]], align 1
define void @test1() {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_COND37_PREHEADER_PREHEADER:%.*]]
; CHECK: for.cond33.preheader.preheader:
; CHECK-NEXT: br label [[FOR_COND33_PREHEADER:%.*]]
; CHECK: for.cond33.preheader:
; CHECK-NEXT: [[I_011:%.*]] = phi i16 [ [[INC69:%.*]], [[FOR_END67:%.*]] ], [ 0, [[FOR_COND33_PREHEADER_PREHEADER:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY42_SPLIT1:%.*]]
; CHECK: for.body42.preheader:
; CHECK-NEXT: br label [[FOR_BODY42:%.*]]
; CHECK: for.cond37.preheader.preheader:
; CHECK-NEXT: br label [[FOR_COND37_PREHEADER:%.*]]
; CHECK: for.cond37.preheader:
; CHECK-NEXT: [[J_010:%.*]] = phi i16 [ [[INC66:%.*]], [[FOR_END64:%.*]] ], [ 0, [[FOR_COND37_PREHEADER_PREHEADER]] ]
; CHECK-NEXT: br label [[FOR_BODY42_PREHEADER:%.*]]
; CHECK: for.body42:
; CHECK-NEXT: [[K_09:%.*]] = phi i16 [ [[TMP1:%.*]], [[FOR_BODY42_SPLIT:%.*]] ], [ -512, [[FOR_BODY42_PREHEADER]] ]
; CHECK-NEXT: br label [[FOR_COND33_PREHEADER_PREHEADER]]
; CHECK: for.body42.split1:
; CHECK-NEXT: [[SUB51:%.*]] = add nsw i16 [[K_09]], 512
; CHECK-NEXT: [[ARRAYIDX55:%.*]] = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 [[SUB51]], i16 [[J_010]]
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX55]], align 1
; CHECK-NEXT: [[ADD61:%.*]] = add i32 undef, undef
; CHECK-NEXT: [[INC63:%.*]] = add nsw i16 [[K_09]], 1
; CHECK-NEXT: br label [[FOR_END67]]
; CHECK: for.body42.split:
; CHECK-NEXT: [[ADD61_LCSSA:%.*]] = phi i32 [ [[ADD61]], [[FOR_END67]] ]
; CHECK-NEXT: [[TMP1]] = add nsw i16 [[K_09]], 1
; CHECK-NEXT: br i1 true, label [[FOR_END64]], label [[FOR_BODY42]]
; CHECK: for.end64:
; CHECK-NEXT: [[ADD61_LCSSA_LCSSA:%.*]] = phi i32 [ [[ADD61_LCSSA]], [[FOR_BODY42_SPLIT]] ]
; CHECK-NEXT: store i32 [[ADD61_LCSSA_LCSSA]], ptr undef, align 1
; CHECK-NEXT: [[INC66]] = add nuw nsw i16 [[J_010]], 1
; CHECK-NEXT: br i1 true, label [[FOR_COND75_PREHEADER:%.*]], label [[FOR_COND37_PREHEADER]]
; CHECK: for.end67:
; CHECK-NEXT: [[INC69]] = add nuw nsw i16 [[I_011]], 1
; CHECK-NEXT: [[EXITCOND13_NOT:%.*]] = icmp eq i16 [[INC69]], 2
; CHECK-NEXT: br i1 [[EXITCOND13_NOT]], label [[FOR_BODY42_SPLIT]], label [[FOR_COND33_PREHEADER]]
; CHECK: for.cond75.preheader:
; CHECK-NEXT: br label [[FOR_COND75:%.*]]
; CHECK: for.cond75:
; CHECK-NEXT: br label [[FOR_COND75]]
;
entry:
br label %for.cond33.preheader
for.cond33.preheader: ; preds = %for.end67, %entry
%i.011 = phi i16 [ 0, %entry ], [ %inc69, %for.end67 ]
br label %for.cond37.preheader
for.cond37.preheader: ; preds = %for.end64, %for.cond33.preheader
%j.010 = phi i16 [ 0, %for.cond33.preheader ], [ %inc66, %for.end64 ]
br label %for.body42
for.body42: ; preds = %for.body42, %for.cond37.preheader
%k.09 = phi i16 [ -512, %for.cond37.preheader ], [ %inc63, %for.body42 ]
%sub51 = add nsw i16 %k.09, 512
%arrayidx55 = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 %sub51, i16 %j.010
%0 = load i32, ptr %arrayidx55, align 1
%add61 = add i32 undef, undef
%inc63 = add nsw i16 %k.09, 1
br i1 true, label %for.end64, label %for.body42
for.end64: ; preds = %for.body42
store i32 %add61, ptr undef, align 1
%inc66 = add nuw nsw i16 %j.010, 1
br i1 true, label %for.end67, label %for.cond37.preheader
for.end67: ; preds = %for.end64
%inc69 = add nuw nsw i16 %i.011, 1
%exitcond13.not = icmp eq i16 %inc69, 2
br i1 %exitcond13.not, label %for.cond75, label %for.cond33.preheader
for.cond75: ; preds = %for.cond75, %for.end67
br label %for.cond75
}
; Make sure that we split the phi nodes in the middle loop header
; into a separate basic block to avoid the situation where use of
; the outermost indvar appears before its def after interchanging
; the outermost and the middle loop. Otherwise loop interchange
; would crash.
define void @test2() {
; CHECK-LABEL: @test2(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_COND37_PREHEADER_PREHEADER:%.*]]
; CHECK: for.cond33.preheader.preheader:
; CHECK-NEXT: br label [[FOR_COND33_PREHEADER:%.*]]
; CHECK: for.cond33.preheader:
; CHECK-NEXT: [[I_166:%.*]] = phi i16 [ [[INC69:%.*]], [[FOR_INC68:%.*]] ], [ 0, [[FOR_COND33_PREHEADER_PREHEADER:%.*]] ]
; CHECK-NEXT: [[ARRAYIDX60:%.*]] = getelementptr inbounds [2 x [4 x i32]], ptr @c, i16 0, i16 [[I_166]], i16 [[J_165:%.*]]
; CHECK-NEXT: br label [[VECTOR_BODY85_SPLIT1:%.*]]
; CHECK: for.cond37.preheader.preheader:
; CHECK-NEXT: br label [[FOR_COND37_PREHEADER:%.*]]
; CHECK: for.cond37.preheader:
; CHECK-NEXT: [[J_165]] = phi i16 [ [[INC66:%.*]], [[MIDDLE_BLOCK80:%.*]] ], [ 0, [[FOR_COND37_PREHEADER_PREHEADER]] ]
; CHECK-NEXT: br label [[FOR_COND37_PREHEADER_SPLIT:%.*]]
; CHECK: for.cond37.preheader.split:
; CHECK-NEXT: br label [[VECTOR_BODY85:%.*]]
; CHECK: vector.body85:
; CHECK-NEXT: [[INDEX86:%.*]] = phi i16 [ 0, [[FOR_COND37_PREHEADER_SPLIT]] ], [ [[TMP3:%.*]], [[VECTOR_BODY85_SPLIT:%.*]] ]
; CHECK-NEXT: br label [[FOR_COND33_PREHEADER_PREHEADER]]
; CHECK: vector.body85.split1:
; CHECK-NEXT: [[TMP0:%.*]] = or disjoint i16 [[INDEX86]], 2
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 [[TMP0]], i16 [[J_165]]
; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP1]], align 1
; CHECK-NEXT: [[INDEX_NEXT87:%.*]] = add nuw i16 [[INDEX86]], 4
; CHECK-NEXT: br label [[FOR_INC68]]
; CHECK: vector.body85.split:
; CHECK-NEXT: [[TMP3]] = add nuw i16 [[INDEX86]], 4
; CHECK-NEXT: br i1 true, label [[MIDDLE_BLOCK80]], label [[VECTOR_BODY85]]
; CHECK: middle.block80:
; CHECK-NEXT: [[INC66]] = add nuw nsw i16 [[J_165]], 1
; CHECK-NEXT: br i1 true, label [[FOR_COND75_PREHEADER:%.*]], label [[FOR_COND37_PREHEADER]]
; CHECK: for.inc68:
; CHECK-NEXT: [[INC69]] = add nuw nsw i16 [[I_166]], 1
; CHECK-NEXT: [[EXITCOND77_NOT:%.*]] = icmp eq i16 [[INC69]], 2
; CHECK-NEXT: br i1 [[EXITCOND77_NOT]], label [[VECTOR_BODY85_SPLIT]], label [[FOR_COND33_PREHEADER]]
; CHECK: for.cond75.preheader:
; CHECK-NEXT: unreachable
;
entry:
br label %for.cond33.preheader
for.cond33.preheader: ; preds = %for.inc68, %entry
%i.166 = phi i16 [ %inc69, %for.inc68 ], [ 0, %entry ]
br label %for.cond37.preheader
for.cond37.preheader: ; preds = %middle.block80, %for.cond33.preheader
%j.165 = phi i16 [ 0, %for.cond33.preheader ], [ %inc66, %middle.block80 ]
%arrayidx60 = getelementptr inbounds [2 x [4 x i32]], ptr @c, i16 0, i16 %i.166, i16 %j.165
br label %vector.body85
vector.body85: ; preds = %vector.body85, %for.cond37.preheader
%index86 = phi i16 [ 0, %for.cond37.preheader ], [ %index.next87, %vector.body85 ]
%0 = or disjoint i16 %index86, 2
%1 = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 %0, i16 %j.165
%2 = load i32, ptr %1, align 1
%index.next87 = add nuw i16 %index86, 4
br i1 undef, label %middle.block80, label %vector.body85
middle.block80: ; preds = %vector.body85
%inc66 = add nuw nsw i16 %j.165, 1
br i1 undef, label %for.inc68, label %for.cond37.preheader
for.inc68: ; preds = %middle.block80
%inc69 = add nuw nsw i16 %i.166, 1
%exitcond77.not = icmp eq i16 %inc69, 2
br i1 %exitcond77.not, label %for.cond75.preheader, label %for.cond33.preheader
for.cond75.preheader: ; preds = %for.inc68
unreachable
}
; Same as test1, but with a third index on the GEP
define void @test3() {
; CHECK-LABEL: @test3(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_COND37_PREHEADER_PREHEADER:%.*]]
; CHECK: for.cond33.preheader.preheader:
; CHECK-NEXT: br label [[FOR_COND33_PREHEADER:%.*]]
; CHECK: for.cond33.preheader:
; CHECK-NEXT: [[I_011:%.*]] = phi i16 [ [[INC69:%.*]], [[FOR_END67:%.*]] ], [ 0, [[FOR_COND33_PREHEADER_PREHEADER:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY42_SPLIT1:%.*]]
; CHECK: for.body42.preheader:
; CHECK-NEXT: br label [[FOR_BODY42:%.*]]
; CHECK: for.cond38.preheader.preheader:
; CHECK-NEXT: br label [[FOR_COND38_PREHEADER:%.*]]
; CHECK: for.cond37.preheader.preheader:
; CHECK-NEXT: br label [[FOR_COND37_PREHEADER:%.*]]
; CHECK: for.cond37.preheader:
; CHECK-NEXT: [[J_010:%.*]] = phi i16 [ [[INC66:%.*]], [[FOR_END64:%.*]] ], [ 0, [[FOR_COND37_PREHEADER_PREHEADER]] ]
; CHECK-NEXT: br label [[FOR_COND38_PREHEADER_PREHEADER:%.*]]
; CHECK: for.cond38.preheader:
; CHECK-NEXT: [[K_010:%.*]] = phi i16 [ [[INC67:%.*]], [[FOR_END65:%.*]] ], [ 0, [[FOR_COND38_PREHEADER_PREHEADER]] ]
; CHECK-NEXT: br label [[FOR_BODY42_PREHEADER:%.*]]
; CHECK: for.body42:
; CHECK-NEXT: [[K_09:%.*]] = phi i16 [ [[TMP1:%.*]], [[FOR_BODY42_SPLIT:%.*]] ], [ -512, [[FOR_BODY42_PREHEADER]] ]
; CHECK-NEXT: br label [[FOR_COND33_PREHEADER_PREHEADER]]
; CHECK: for.body42.split1:
; CHECK-NEXT: [[SUB51:%.*]] = add nsw i16 [[K_09]], 512
; CHECK-NEXT: [[ARRAYIDX55:%.*]] = getelementptr inbounds [1024 x [512 x [4 x i32]]], ptr @d, i16 0, i16 [[SUB51]], i16 [[J_010]], i16 [[K_010]]
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX55]], align 1
; CHECK-NEXT: [[ADD61:%.*]] = add i32 undef, undef
; CHECK-NEXT: [[INC63:%.*]] = add nsw i16 [[K_09]], 1
; CHECK-NEXT: br label [[FOR_END67]]
; CHECK: for.body42.split:
; CHECK-NEXT: [[ADD61_LCSSA:%.*]] = phi i32 [ [[ADD61]], [[FOR_END67]] ]
; CHECK-NEXT: [[TMP1]] = add nsw i16 [[K_09]], 1
; CHECK-NEXT: br i1 true, label [[FOR_END65]], label [[FOR_BODY42]]
; CHECK: for.end65:
; CHECK-NEXT: [[ADD61_LCSSA_LCSSA:%.*]] = phi i32 [ [[ADD61_LCSSA]], [[FOR_BODY42_SPLIT]] ]
; CHECK-NEXT: store i32 [[ADD61_LCSSA_LCSSA]], ptr undef, align 1
; CHECK-NEXT: [[INC67]] = add nuw nsw i16 [[K_010]], 1
; CHECK-NEXT: br i1 true, label [[FOR_END64]], label [[FOR_COND38_PREHEADER]]
; CHECK: for.end64:
; CHECK-NEXT: [[INC66]] = add nuw nsw i16 [[J_010]], 1
; CHECK-NEXT: br i1 true, label [[FOR_COND75_PREHEADER:%.*]], label [[FOR_COND37_PREHEADER]]
; CHECK: for.end67:
; CHECK-NEXT: [[INC69]] = add nuw nsw i16 [[I_011]], 1
; CHECK-NEXT: [[EXITCOND13_NOT:%.*]] = icmp eq i16 [[INC69]], 2
; CHECK-NEXT: br i1 [[EXITCOND13_NOT]], label [[FOR_BODY42_SPLIT]], label [[FOR_COND33_PREHEADER]]
; CHECK: for.cond75.preheader:
; CHECK-NEXT: br label [[FOR_COND75:%.*]]
; CHECK: for.cond75:
; CHECK-NEXT: br label [[FOR_COND75]]
;
entry:
br label %for.cond33.preheader
for.cond33.preheader: ; preds = %for.end67, %entry
%i.011 = phi i16 [ 0, %entry ], [ %inc69, %for.end67 ]
br label %for.cond37.preheader
for.cond37.preheader: ; preds = %for.end64, %for.cond33.preheader
%j.010 = phi i16 [ 0, %for.cond33.preheader ], [ %inc66, %for.end64 ]
br label %for.cond38.preheader
for.cond38.preheader: ; preds = %for.end65, %for.cond37.preheader
%k.010 = phi i16 [ 0, %for.cond37.preheader ], [ %inc67, %for.end65 ]
br label %for.body42
for.body42: ; preds = %for.body42, %for.cond38.preheader
%k.09 = phi i16 [ -512, %for.cond38.preheader ], [ %inc63, %for.body42 ]
%sub51 = add nsw i16 %k.09, 512
%arrayidx55 = getelementptr inbounds [1024 x [512 x [4 x i32]]], ptr @d, i16 0, i16 %sub51, i16 %j.010, i16 %k.010
%0 = load i32, ptr %arrayidx55, align 1
%add61 = add i32 undef, undef
%inc63 = add nsw i16 %k.09, 1
br i1 true, label %for.end65, label %for.body42
for.end65: ; preds = %for.body42
store i32 %add61, ptr undef, align 1
%inc67 = add nuw nsw i16 %k.010, 1
br i1 true, label %for.end64, label %for.cond38.preheader
for.end64: ; preds = %for.end65
%inc66 = add nuw nsw i16 %j.010, 1
br i1 true, label %for.end67, label %for.cond37.preheader
for.end67: ; preds = %for.end64
%inc69 = add nuw nsw i16 %i.011, 1
%exitcond13.not = icmp eq i16 %inc69, 2
br i1 %exitcond13.not, label %for.cond75, label %for.cond33.preheader
for.cond75: ; preds = %for.cond75, %for.end67
br label %for.cond75
}
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