9d172c8e9c
This switches to using DSE + MemorySSA by default again, after fixing the issues reported after the first commit. Notable fixesfc82006331,a0017c2bc2. This reverts commit3a59628f3c.
69 lines
1.9 KiB
LLVM
69 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -basic-aa -dse -S | FileCheck %s
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; RUN: opt < %s -aa-pipeline=basic-aa -passes=dse -S | FileCheck %s
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declare void @use(i64*)
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define void @test1() {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[A:%.*]] = alloca i64
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; CHECK-NEXT: call void @use(i64* [[A]])
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; CHECK-NEXT: [[PTR1:%.*]] = bitcast i64* [[A]] to i8*
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; CHECK-NEXT: [[PTR2:%.*]] = getelementptr i8, i8* [[PTR1]], i32 1
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; CHECK-NEXT: store i8 10, i8* [[PTR1]]
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; CHECK-NEXT: store i8 20, i8* [[PTR2]]
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; CHECK-NEXT: [[LV:%.*]] = load i64, i64* [[A]]
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; CHECK-NEXT: store i8 0, i8* [[PTR1]]
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; CHECK-NEXT: call void @use(i64* [[A]])
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; CHECK-NEXT: ret void
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;
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%a = alloca i64
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call void @use(i64* %a)
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%ptr1 = bitcast i64* %a to i8*
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%ptr2 = getelementptr i8, i8* %ptr1, i32 1
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store i8 10, i8* %ptr1
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store i8 20, i8* %ptr2
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%lv = load i64, i64* %a
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store i8 0, i8* %ptr1
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call void @use(i64* %a)
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ret void
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}
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define void @test2() {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[A:%.*]] = alloca i64
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; CHECK-NEXT: call void @use(i64* [[A]])
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; CHECK-NEXT: [[PTR1:%.*]] = bitcast i64* [[A]] to i8*
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; CHECK-NEXT: [[PTR2:%.*]] = getelementptr i8, i8* [[PTR1]], i32 1
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; CHECK-NEXT: store i8 10, i8* [[PTR1]]
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; CHECK-NEXT: store i8 20, i8* [[PTR2]]
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; CHECK-NEXT: br i1 undef, label [[BB1:%.*]], label [[END:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: [[LV:%.*]] = load i64, i64* [[A]]
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; CHECK-NEXT: br label [[END]]
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; CHECK: end:
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; CHECK-NEXT: store i8 0, i8* [[PTR1]]
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; CHECK-NEXT: call void @use(i64* [[A]])
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; CHECK-NEXT: ret void
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;
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%a = alloca i64
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call void @use(i64* %a)
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%ptr1 = bitcast i64* %a to i8*
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%ptr2 = getelementptr i8, i8* %ptr1, i32 1
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store i8 10, i8* %ptr1
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store i8 20, i8* %ptr2
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br i1 undef, label %bb1, label %end
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bb1:
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%lv = load i64, i64* %a
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br label %end
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end:
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store i8 0, i8* %ptr1
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call void @use(i64* %a)
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ret void
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}
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