9d172c8e9c
This switches to using DSE + MemorySSA by default again, after fixing the issues reported after the first commit. Notable fixes fc8200633122, a0017c2bc258. This reverts commit 3a59628f3cc26eb085acfc9cbdc97243ef71a6c5.
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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