forked from OSchip/llvm-project
50 lines
2.5 KiB
LLVM
50 lines
2.5 KiB
LLVM
; RUN: opt -inferattrs -basic-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 %s | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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target triple = "x86_64-apple-macosx10.7"
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; CHECK-LABEL: Function: test_memcmp_const_size
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; CHECK: Just Ref: Ptr: i8* %a <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
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; CHECK-NEXT: Just Ref: Ptr: i8* %b <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
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; CHECK-NEXT: Just Ref: Ptr: i8* %a.gep.1 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
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; CHECK-NEXT: NoModRef: Ptr: i8* %a.gep.5 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
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; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.1 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
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; CHECK-NEXT: NoModRef: Ptr: i8* %b.gep.5 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
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define i32 @test_memcmp_const_size(i8* noalias %a, i8* noalias %b) {
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entry:
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%res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
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%a.gep.1 = getelementptr i8, i8* %a, i32 1
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store i8 0, i8* %a.gep.1
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%a.gep.5 = getelementptr i8, i8* %a, i32 5
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store i8 1, i8* %a.gep.5
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%b.gep.1 = getelementptr i8, i8* %b, i32 1
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store i8 2, i8* %b.gep.1
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%b.gep.5 = getelementptr i8, i8* %b, i32 5
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store i8 3, i8* %b.gep.5
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ret i32 %res
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}
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; CHECK-LABEL: Function: test_memcmp_variable_size
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; CHECK: Just Ref: Ptr: i8* %a <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
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; CHECK-NEXT: Just Ref: Ptr: i8* %b <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
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; CHECK-NEXT: Just Ref: Ptr: i8* %a.gep.1 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
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; CHECK-NEXT: Just Ref: Ptr: i8* %a.gep.5 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
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; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.1 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
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; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.5 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
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define i32 @test_memcmp_variable_size(i8* noalias %a, i8* noalias %b, i64 %n) {
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entry:
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%res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
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%a.gep.1 = getelementptr i8, i8* %a, i32 1
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store i8 0, i8* %a.gep.1
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%a.gep.5 = getelementptr i8, i8* %a, i32 5
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store i8 1, i8* %a.gep.5
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%b.gep.1 = getelementptr i8, i8* %b, i32 1
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store i8 2, i8* %b.gep.1
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%b.gep.5 = getelementptr i8, i8* %b, i32 5
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store i8 3, i8* %b.gep.5
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ret i32 %res
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}
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declare i32 @memcmp(i8*, i8*, i64)
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