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llvm-mirror/test/Analysis/BasicAA/libfuncs.ll
Dávid Bolvanský 153ebe5596 [InferAttrs] Add nocapture/writeonly to string/mem libcalls 
One step closer to fix PR47644.

Differential Revision: https://reviews.llvm.org/D89645
2020-10-29 20:06:43 +01:00

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; RUN: opt -mtriple=i386-pc-linux-gnu -inferattrs -basic-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 %s | FileCheck %s
; CHECK-LABEL: Function: test_memcmp_const_size
; CHECK: Just Ref: Ptr: i8* %a <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: Just Ref: Ptr: i8* %b <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: Just Ref: Ptr: i8* %a.gep.1 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: NoModRef: Ptr: i8* %a.gep.5 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.1 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: NoModRef: Ptr: i8* %b.gep.5 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
define i32 @test_memcmp_const_size(i8* noalias %a, i8* noalias %b) {
entry:
%res = tail call i32 @memcmp(i8* %a, i8* %b, i64 4)
%a.gep.1 = getelementptr i8, i8* %a, i32 1
store i8 0, i8* %a.gep.1
%a.gep.5 = getelementptr i8, i8* %a, i32 5
store i8 1, i8* %a.gep.5
%b.gep.1 = getelementptr i8, i8* %b, i32 1
store i8 2, i8* %b.gep.1
%b.gep.5 = getelementptr i8, i8* %b, i32 5
store i8 3, i8* %b.gep.5
ret i32 %res
}
; CHECK-LABEL: Function: test_memcmp_variable_size
; CHECK: Just Ref: Ptr: i8* %a <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %b <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %a.gep.1 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %a.gep.5 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.1 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.5 <-> %res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
define i32 @test_memcmp_variable_size(i8* noalias %a, i8* noalias %b, i64 %n) {
entry:
%res = tail call i32 @memcmp(i8* %a, i8* %b, i64 %n)
%a.gep.1 = getelementptr i8, i8* %a, i32 1
store i8 0, i8* %a.gep.1
%a.gep.5 = getelementptr i8, i8* %a, i32 5
store i8 1, i8* %a.gep.5
%b.gep.1 = getelementptr i8, i8* %b, i32 1
store i8 2, i8* %b.gep.1
%b.gep.5 = getelementptr i8, i8* %b, i32 5
store i8 3, i8* %b.gep.5
ret i32 %res
}
declare i32 @memcmp(i8*, i8*, i64)
declare i32 @bcmp(i8*, i8*, i64)
; CHECK-LABEL: Function: test_bcmp_const_size
; CHECK: Just Ref: Ptr: i8* %a <-> %res = tail call i32 @bcmp(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: Just Ref: Ptr: i8* %b <-> %res = tail call i32 @bcmp(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: Just Ref: Ptr: i8* %a.gep.1 <-> %res = tail call i32 @bcmp(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: NoModRef: Ptr: i8* %a.gep.5 <-> %res = tail call i32 @bcmp(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.1 <-> %res = tail call i32 @bcmp(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: NoModRef: Ptr: i8* %b.gep.5 <-> %res = tail call i32 @bcmp(i8* %a, i8* %b, i64 4)
define i32 @test_bcmp_const_size(i8* noalias %a, i8* noalias %b) {
entry:
%res = tail call i32 @bcmp(i8* %a, i8* %b, i64 4)
%a.gep.1 = getelementptr i8, i8* %a, i32 1
store i8 0, i8* %a.gep.1
%a.gep.5 = getelementptr i8, i8* %a, i32 5
store i8 1, i8* %a.gep.5
%b.gep.1 = getelementptr i8, i8* %b, i32 1
store i8 2, i8* %b.gep.1
%b.gep.5 = getelementptr i8, i8* %b, i32 5
store i8 3, i8* %b.gep.5
ret i32 %res
}
; CHECK-LABEL: Function: test_bcmp_variable_size
; CHECK: Just Ref: Ptr: i8* %a <-> %res = tail call i32 @bcmp(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %b <-> %res = tail call i32 @bcmp(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %a.gep.1 <-> %res = tail call i32 @bcmp(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %a.gep.5 <-> %res = tail call i32 @bcmp(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.1 <-> %res = tail call i32 @bcmp(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.5 <-> %res = tail call i32 @bcmp(i8* %a, i8* %b, i64 %n)
define i32 @test_bcmp_variable_size(i8* noalias %a, i8* noalias %b, i64 %n) {
entry:
%res = tail call i32 @bcmp(i8* %a, i8* %b, i64 %n)
%a.gep.1 = getelementptr i8, i8* %a, i32 1
store i8 0, i8* %a.gep.1
%a.gep.5 = getelementptr i8, i8* %a, i32 5
store i8 1, i8* %a.gep.5
%b.gep.1 = getelementptr i8, i8* %b, i32 1
store i8 2, i8* %b.gep.1
%b.gep.5 = getelementptr i8, i8* %b, i32 5
store i8 3, i8* %b.gep.5
ret i32 %res
}
declare i8* @memchr(i8*, i32, i64)
; CHECK-LABEL: Function: test_memchr_const_size
; CHECK: Just Ref: Ptr: i8* %res <-> %res = call i8* @memchr(i8* %a, i32 42, i64 4)
; CHECK-NEXT: Just Ref: Ptr: i8* %a.gep.1 <-> %res = call i8* @memchr(i8* %a, i32 42, i64 4)
; CHECK-NEXT: NoModRef: Ptr: i8* %a.gep.5 <-> %res = call i8* @memchr(i8* %a, i32 42, i64 4)
define i8* @test_memchr_const_size(i8* noalias %a) {
entry:
%res = call i8* @memchr(i8* %a, i32 42, i64 4)
%a.gep.1 = getelementptr i8, i8* %a, i32 1
store i8 0, i8* %a.gep.1
%a.gep.5 = getelementptr i8, i8* %a, i32 5
store i8 1, i8* %a.gep.5
ret i8* %res
}
declare i8* @memccpy(i8*, i8*, i32, i64)
; CHECK-LABEL: Function: test_memccpy_const_size
; CHECK: Just Mod: Ptr: i8* %a <-> %res = call i8* @memccpy(i8* %a, i8* %b, i32 42, i64 4)
; CHECK-NEXT: Just Ref: Ptr: i8* %b <-> %res = call i8* @memccpy(i8* %a, i8* %b, i32 42, i64 4)
; CHECK-NEXT: Just Mod: Ptr: i8* %res <-> %res = call i8* @memccpy(i8* %a, i8* %b, i32 42, i64 4)
; CHECK-NEXT: Just Mod: Ptr: i8* %a.gep.1 <-> %res = call i8* @memccpy(i8* %a, i8* %b, i32 42, i64 4)
; CHECK-NEXT: NoModRef: Ptr: i8* %a.gep.5 <-> %res = call i8* @memccpy(i8* %a, i8* %b, i32 42, i64 4)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.1 <-> %res = call i8* @memccpy(i8* %a, i8* %b, i32 42, i64 4)
; CHECK-NEXT: NoModRef: Ptr: i8* %b.gep.5 <-> %res = call i8* @memccpy(i8* %a, i8* %b, i32 42, i64 4)
define i8* @test_memccpy_const_size(i8* noalias %a, i8* noalias %b) {
entry:
%res = call i8* @memccpy(i8* %a, i8* %b, i32 42, i64 4)
%a.gep.1 = getelementptr i8, i8* %a, i32 1
store i8 0, i8* %a.gep.1
%a.gep.5 = getelementptr i8, i8* %a, i32 5
store i8 1, i8* %a.gep.5
%b.gep.1 = getelementptr i8, i8* %b, i32 1
store i8 2, i8* %b.gep.1
%b.gep.5 = getelementptr i8, i8* %b, i32 5
store i8 3, i8* %b.gep.5
ret i8* %res
}
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