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.
56 lines
1.9 KiB
LLVM
56 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s --data-layout "e" -dse -enable-dse-partial-store-merging=true -S | FileCheck --check-prefix CHECK --check-prefix CHECK-LE %s
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; RUN: opt < %s --data-layout "E" -dse -enable-dse-partial-store-merging=true -S | FileCheck --check-prefix CHECK --check-prefix CHECK-BE %s
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; This test used to hit an assertion (see PR41949).
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;
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; Better safe than sorry, do not assume anything about the padding for the
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; i28 store that has 32 bits as store size.
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define void @test1(i32* %p) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[A:%.*]] = alloca i32
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; CHECK-NEXT: [[B:%.*]] = bitcast i32* [[A]] to i28*
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; CHECK-NEXT: [[C:%.*]] = bitcast i32* [[A]] to { i16, i16 }*
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; CHECK-NEXT: [[C1:%.*]] = getelementptr inbounds { i16, i16 }, { i16, i16 }* [[C]], i32 0, i32 1
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; CHECK-NEXT: store i28 10, i28* [[B]]
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; CHECK-NEXT: store i16 20, i16* [[C1]]
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; CHECK-NEXT: call void @test1(i32* [[A]])
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; CHECK-NEXT: ret void
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;
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%a = alloca i32
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%b = bitcast i32* %a to i28*
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%c = bitcast i32* %a to { i16, i16 }*
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%c1 = getelementptr inbounds { i16, i16 }, { i16, i16 }* %c, i32 0, i32 1
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store i28 10, i28* %b
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store i16 20, i16* %c1
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call void @test1(i32* %a)
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ret void
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}
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; This test used to mis-compile (see PR41949).
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;
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; Better safe than sorry, do not assume anything about the padding for the
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; i12 store that has 16 bits as store size.
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define void @test2(i32* %p) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[U:%.*]] = alloca i32
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; CHECK-NEXT: [[A:%.*]] = bitcast i32* [[U]] to i32*
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; CHECK-NEXT: [[B:%.*]] = bitcast i32* [[U]] to i12*
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; CHECK-NEXT: store i32 -1, i32* [[A]]
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; CHECK-NEXT: store i12 20, i12* [[B]]
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; CHECK-NEXT: call void @test2(i32* [[U]])
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; CHECK-NEXT: ret void
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;
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%u = alloca i32
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%a = bitcast i32* %u to i32*
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%b = bitcast i32* %u to i12*
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store i32 -1, i32* %a
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store i12 20, i12* %b
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call void @test2(i32* %u)
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ret void
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}
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