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116cd71f2c
Just like llvm.assume, there are a lot of cases where we can just ignore llvm.experimental.noalias.scope.decl. Reviewed By: nikic Differential Revision: https://reviews.llvm.org/D93042
86 lines
3.4 KiB
LLVM
86 lines
3.4 KiB
LLVM
; RUN: opt -basic-aa -print-alias-sets -S -o - < %s 2>&1 | FileCheck %s
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; CHECK: Alias sets for function 'test1':
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; CHECK: Alias Set Tracker: 2 alias sets for 2 pointer values.
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; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %a, LocationSize::precise(1))
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; CHECK-NOT: 1 Unknown instruction
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; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %b, LocationSize::precise(1))
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define void @test1(i32 %c) {
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entry:
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%a = alloca i8, align 1
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%b = alloca i8, align 1
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store i8 1, i8* %a, align 1
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%cond1 = icmp ne i32 %c, 0
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call void @llvm.assume(i1 %cond1)
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store i8 1, i8* %b, align 1
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ret void
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}
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; CHECK: Alias sets for function 'test2':
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; CHECK: Alias Set Tracker: 3 alias sets for 2 pointer values.
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; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %a, LocationSize::precise(1))
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; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] may alias, Ref
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; CHECK: 1 Unknown instructions: call void (i1, ...) @llvm.experimental.guard(i1 %cond1) [ "deopt"() ]
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; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %b, LocationSize::precise(1))
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define void @test2(i32 %c) {
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entry:
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%a = alloca i8, align 1
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%b = alloca i8, align 1
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store i8 1, i8* %a, align 1
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%cond1 = icmp ne i32 %c, 0
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call void (i1, ...) @llvm.experimental.guard(i1 %cond1)["deopt"()]
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store i8 1, i8* %b, align 1
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ret void
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}
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; CHECK: Alias sets for function 'test3':
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; CHECK: Alias Set Tracker: 1 alias sets for 2 pointer values.
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; CHECK: AliasSet[0x{{[0-9a-f]+}}, 3] may alias, Mod/Ref Pointers: (i8* %a, LocationSize::precise(1)), (i8* %b, LocationSize::precise(1))
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; CHECK: 1 Unknown instructions: call void (i1, ...) @llvm.experimental.guard(i1 %cond1) [ "deopt"() ]
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define void @test3(i32 %c, i8* %a, i8* %b) {
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entry:
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store i8 1, i8* %a, align 1
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%cond1 = icmp ne i32 %c, 0
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call void (i1, ...) @llvm.experimental.guard(i1 %cond1)["deopt"()]
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store i8 1, i8* %b, align 1
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ret void
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}
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; CHECK: Alias sets for function 'test4':
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; CHECK: Alias Set Tracker: 2 alias sets for 2 pointer values.
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; CHECK: AliasSet[0x{{[0-9a-f]+}}, 2] may alias, Mod/Ref Pointers: (i8* %a, LocationSize::precise(1))
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; CHECK: 1 Unknown instructions: call void (i1, ...) @llvm.experimental.guard(i1 %cond1) [ "deopt"() ]
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; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %b, LocationSize::precise(1))
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define void @test4(i32 %c, i8* %a) {
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entry:
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%b = alloca i8, align 1
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store i8 1, i8* %a, align 1
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%cond1 = icmp ne i32 %c, 0
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call void (i1, ...) @llvm.experimental.guard(i1 %cond1)["deopt"()]
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store i8 1, i8* %b, align 1
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ret void
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}
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; CHECK: Alias sets for function 'test5':
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; CHECK: Alias Set Tracker: 2 alias sets for 2 pointer values.
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; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %a, LocationSize::precise(1))
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; CHECK-NOT: 1 Unknown instruction
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; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %b, LocationSize::precise(1))
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define void @test5() {
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entry:
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%a = alloca i8, align 1
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%b = alloca i8, align 1
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store i8 1, i8* %a, align 1
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call void @llvm.experimental.noalias.scope.decl(metadata !0)
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store i8 1, i8* %b, align 1
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ret void
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}
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declare void @llvm.assume(i1)
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declare void @llvm.experimental.guard(i1, ...)
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declare void @llvm.experimental.noalias.scope.decl(metadata)
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!0 = !{ !1 }
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!1 = distinct !{ !1, !2, !"test5: var" }
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!2 = distinct !{ !2, !"test5" }
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