54 lines
2.1 KiB
LLVM
54 lines
2.1 KiB
LLVM
; RUN: opt -basicaa -print-alias-sets -alias-set-saturation-threshold=2 -S -o - < %s 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=NOSAT
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; RUN: opt -basicaa -print-alias-sets -alias-set-saturation-threshold=1 -S -o - < %s 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=SAT
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; CHECK-LABEL: 'allmust'
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; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %a, 4)
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; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %b, 4)
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; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %c, 4)
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; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %d, 4)
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define void @allmust() {
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%a = alloca i32
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%b = alloca i32
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%c = alloca i32
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%d = alloca i32
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store i32 1, i32* %a
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store i32 2, i32* %b
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store i32 3, i32* %c
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store i32 4, i32* %d
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ret void
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}
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; CHECK-LABEL :'mergemay'
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; NOSAT: AliasSet[{{.*}}, 2] may alias, Mod Pointers: (i32* %a, 4), (i32* %a1, 4)
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; NOSAT: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %b, 4)
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; SAT: AliasSet[{{.*}}, 2] may alias, Mod forwarding to 0x[[FWD:[0-9a-f]*]]
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; SAT: AliasSet[{{.*}}, 1] must alias, Mod forwarding to 0x[[FWD]]
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; SAT: AliasSet[0x[[FWD]], 2] may alias, Mod/Ref Pointers: (i32* %a, 4), (i32* %a1, 4), (i32* %b, 4)
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define void @mergemay(i32 %k) {
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%a = alloca i32
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%b = alloca i32
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store i32 1, i32* %a
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store i32 2, i32* %b
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%a1 = getelementptr i32, i32 *%a, i32 %k
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store i32 2, i32* %a1
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ret void
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}
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; CHECK-LABEL: 'mergemust'
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; NOSAT: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %a, 4)
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; NOSAT: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %b, 4)
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; NOSAT: AliasSet[{{.*}}, 2] may alias, Mod Pointers: (i32* %c, 4), (i32* %d, 4)
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; SAT: AliasSet[{{.*}}, 1] must alias, Mod forwarding to 0x[[FWD:[0-9a-f]*]]
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; SAT: AliasSet[{{.*}}, 1] must alias, Mod forwarding to 0x[[FWD]]
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; SAT: AliasSet[{{.*}}, 2] may alias, Mod forwarding to 0x[[FWD]]
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; SAT: AliasSet[0x[[FWD]], 3] may alias, Mod/Ref Pointers: (i32* %a, 4), (i32* %b, 4), (i32* %c, 4), (i32* %d, 4)
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define void @mergemust(i32* %c, i32* %d) {
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%a = alloca i32
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%b = alloca i32
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store i32 1, i32* %a
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store i32 2, i32* %b
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store i32 3, i32* %c
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store i32 4, i32* %d
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ret void
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}
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