; RUN: opt -mtriple=i386-pc-linux-gnu -aa-pipeline=basic-aa -passes=inferattrs,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:
load i8, i8* %a
load i8, i8* %b
%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:
load i8, i8* %a
load i8, i8* %b
%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:
load i8, i8* %a
load i8, i8* %b
%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:
load i8, i8* %a
load i8, i8* %b
%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)
load i8, i8* %res
%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:
load i8, i8* %a
load i8, i8* %b
%res = call i8* @memccpy(i8* %a, i8* %b, i32 42, i64 4)
load i8, i8* %res
%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
}
declare i8* @strcat(i8*, i8*)
define i8* @test_strcat_read_write_after(i8* noalias %a, i8* noalias %b) {
; CHECK-LABEL: Function: test_strcat_read_write_after
; CHECK: NoModRef: Ptr: i8* %a <-> %res = tail call i8* @strcat(i8* %a.gep.1, i8* %b.gep.1)
; CHECK-NEXT: NoModRef: Ptr: i8* %b <-> %res = tail call i8* @strcat(i8* %a.gep.1, i8* %b.gep.1)
; CHECK-NEXT: Both ModRef: Ptr: i8* %a.gep.1 <-> %res = tail call i8* @strcat(i8* %a.gep.1, i8* %b.gep.1)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.1 <-> %res = tail call i8* @strcat(i8* %a.gep.1, i8* %b.gep.1)
; CHECK-NEXT: Both ModRef: Ptr: i8* %res <-> %res = tail call i8* @strcat(i8* %a.gep.1, i8* %b.gep.1)
; CHECK-NEXT: Both ModRef: Ptr: i8* %a.gep.5 <-> %res = tail call i8* @strcat(i8* %a.gep.1, i8* %b.gep.1)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.5 <-> %res = tail call i8* @strcat(i8* %a.gep.1, i8* %b.gep.1)
;
entry:
store i8 0, i8* %a
store i8 2, i8* %b
%a.gep.1 = getelementptr i8, i8* %a, i32 1
load i8, i8* %a.gep.1
%b.gep.1 = getelementptr i8, i8* %b, i32 1
load i8, i8* %b.gep.1
%res = tail call i8* @strcat(i8* %a.gep.1, i8* %b.gep.1)
load i8, i8* %res
%a.gep.5 = getelementptr i8, i8* %a, i32 5
store i8 1, i8* %a.gep.5
%b.gep.5 = getelementptr i8, i8* %b, i32 5
store i8 3, i8* %b.gep.5
ret i8* %res
}
declare i8* @strncat(i8*, i8*, i64)
define i8* @test_strncat_read_write_after(i8* noalias %a, i8* noalias %b, i64 %n) {
; CHECK-LABEL: Function: test_strncat_read_write_after
; CHECK: NoModRef: Ptr: i8* %a <-> %res = tail call i8* @strncat(i8* %a.gep.1, i8* %b.gep.1, i64 %n)
; CHECK-NEXT: NoModRef: Ptr: i8* %b <-> %res = tail call i8* @strncat(i8* %a.gep.1, i8* %b.gep.1, i64 %n)
; CHECK-NEXT: Both ModRef: Ptr: i8* %a.gep.1 <-> %res = tail call i8* @strncat(i8* %a.gep.1, i8* %b.gep.1, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.1 <-> %res = tail call i8* @strncat(i8* %a.gep.1, i8* %b.gep.1, i64 %n)
; CHECK-NEXT: Both ModRef: Ptr: i8* %res <-> %res = tail call i8* @strncat(i8* %a.gep.1, i8* %b.gep.1, i64 %n)
; CHECK-NEXT: Both ModRef: Ptr: i8* %a.gep.5 <-> %res = tail call i8* @strncat(i8* %a.gep.1, i8* %b.gep.1, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.5 <-> %res = tail call i8* @strncat(i8* %a.gep.1, i8* %b.gep.1, i64 %n)
;
entry:
store i8 0, i8* %a
store i8 2, i8* %b
%a.gep.1 = getelementptr i8, i8* %a, i32 1
load i8, i8* %a.gep.1
%b.gep.1 = getelementptr i8, i8* %b, i32 1
load i8, i8* %b.gep.1
%res = tail call i8* @strncat(i8* %a.gep.1, i8* %b.gep.1, i64 %n)
load i8, i8* %res
%a.gep.5 = getelementptr i8, i8* %a, i32 5
store i8 1, i8* %a.gep.5
%b.gep.5 = getelementptr i8, i8* %b, i32 5
store i8 3, i8* %b.gep.5
ret i8* %res
}
declare i8* @strcpy(i8*, i8*)
define i8* @test_strcpy_read_write_after(i8* noalias %a, i8* noalias %b) {
; CHECK-LABEL: Function: test_strcpy_read_write_after
; CHECK: NoModRef: Ptr: i8* %a <-> %res = tail call i8* @strcpy(i8* %a.gep.1, i8* %b.gep.1)
; CHECK-NEXT: NoModRef: Ptr: i8* %b <-> %res = tail call i8* @strcpy(i8* %a.gep.1, i8* %b.gep.1)
; CHECK-NEXT: Just Mod: Ptr: i8* %a.gep.1 <-> %res = tail call i8* @strcpy(i8* %a.gep.1, i8* %b.gep.1)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.1 <-> %res = tail call i8* @strcpy(i8* %a.gep.1, i8* %b.gep.1)
; CHECK-NEXT: Just Mod: Ptr: i8* %res <-> %res = tail call i8* @strcpy(i8* %a.gep.1, i8* %b.gep.1)
; CHECK-NEXT: Just Mod: Ptr: i8* %a.gep.5 <-> %res = tail call i8* @strcpy(i8* %a.gep.1, i8* %b.gep.1)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.5 <-> %res = tail call i8* @strcpy(i8* %a.gep.1, i8* %b.gep.1)
;
entry:
store i8 0, i8* %a
store i8 2, i8* %b
%a.gep.1 = getelementptr i8, i8* %a, i32 1
load i8, i8* %a.gep.1
%b.gep.1 = getelementptr i8, i8* %b, i32 1
load i8, i8* %b.gep.1
%res = tail call i8* @strcpy(i8* %a.gep.1, i8* %b.gep.1)
load i8, i8* %res
%a.gep.5 = getelementptr i8, i8* %a, i32 5
store i8 1, i8* %a.gep.5
%b.gep.5 = getelementptr i8, i8* %b, i32 5
store i8 3, i8* %b.gep.5
ret i8* %res
}
declare i8* @strncpy(i8*, i8*, i64)
define i8* @test_strncpy_const_size(i8* noalias %a, i8* noalias %b) {
; CHECK-LABEL: Function: test_strncpy_const_size
; CHECK: Just Mod: Ptr: i8* %a <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: Just Ref: Ptr: i8* %b <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: Just Mod: Ptr: i8* %res <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: Just Mod: Ptr: i8* %a.gep.1 <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: NoModRef: Ptr: i8* %a.gep.5 <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.1 <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 4)
; CHECK-NEXT: NoModRef: Ptr: i8* %b.gep.5 <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 4)
;
entry:
load i8, i8* %a
load i8, i8* %b
%res = tail call i8* @strncpy(i8* %a, i8* %b, i64 4)
load i8, i8* %res
%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
}
define i8* @test_strncpy_variable_size(i8* noalias %a, i8* noalias %b, i64 %n) {
; CHECK-LABEL: Function: test_strncpy_variable_size
; CHECK: Just Mod: Ptr: i8* %a <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %b <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Mod: Ptr: i8* %res <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Mod: Ptr: i8* %a.gep.1 <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Mod: Ptr: i8* %a.gep.5 <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.1 <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 %n)
; CHECK-NEXT: Just Ref: Ptr: i8* %b.gep.5 <-> %res = tail call i8* @strncpy(i8* %a, i8* %b, i64 %n)
;
entry:
load i8, i8* %a
load i8, i8* %b
%res = tail call i8* @strncpy(i8* %a, i8* %b, i64 %n)
load i8, i8* %res
%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
}
declare i8* @__memset_chk(i8* writeonly, i32, i64, i64)
; CHECK-LABEL: Function: test_memset_chk_const_size
define i8* @test_memset_chk_const_size(i8* noalias %a, i64 %n) {
; CHECK: Just Mod (MustAlias): Ptr: i8* %a <-> %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 4, i64 %n)
; CHECK-NEXT: Just Mod: Ptr: i8* %res <-> %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 4, i64 %n)
; CHECK-NEXT: Just Mod: Ptr: i8* %a.gep.1 <-> %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 4, i64 %n)
; CHECK-NEXT: NoModRef: Ptr: i8* %a.gep.5 <-> %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 4, i64 %n)
;
entry:
load i8, i8* %a
%res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 4, i64 %n)
load i8, i8* %res
%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
}
define i8* @test_memset_chk_variable_size(i8* noalias %a, i64 %n.1, i64 %n.2) {
; CHECK-LABEL: Function: test_memset_chk_variable_size
; CHECK: Just Mod (MustAlias): Ptr: i8* %a <-> %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 %n.1, i64 %n.2)
; CHECK-NEXT: Just Mod: Ptr: i8* %res <-> %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 %n.1, i64 %n.2)
; CHECK-NEXT: Just Mod: Ptr: i8* %a.gep.1 <-> %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 %n.1, i64 %n.2)
; CHECK-NEXT: Just Mod: Ptr: i8* %a.gep.5 <-> %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 %n.1, i64 %n.2)
;
entry:
load i8, i8* %a
%res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 %n.1, i64 %n.2)
load i8, i8* %res
%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
}