forked from OSchip/llvm-project
71 lines
1.9 KiB
LLVM
71 lines
1.9 KiB
LLVM
; RUN: opt -S -basicaa -dse < %s | FileCheck %s
|
|
|
|
declare i8* @strcpy(i8* %dest, i8* %src) nounwind
|
|
define void @test1(i8* %src) {
|
|
; CHECK-LABEL: @test1(
|
|
%B = alloca [16 x i8]
|
|
%dest = getelementptr inbounds [16 x i8], [16 x i8]* %B, i64 0, i64 0
|
|
; CHECK-NOT: @strcpy
|
|
%call = call i8* @strcpy(i8* %dest, i8* %src)
|
|
; CHECK: ret void
|
|
ret void
|
|
}
|
|
|
|
declare i8* @strncpy(i8* %dest, i8* %src, i32 %n) nounwind
|
|
define void @test2(i8* %src) {
|
|
; CHECK-LABEL: @test2(
|
|
%B = alloca [16 x i8]
|
|
%dest = getelementptr inbounds [16 x i8], [16 x i8]* %B, i64 0, i64 0
|
|
; CHECK-NOT: @strncpy
|
|
%call = call i8* @strncpy(i8* %dest, i8* %src, i32 12)
|
|
; CHECK: ret void
|
|
ret void
|
|
}
|
|
|
|
declare i8* @strcat(i8* %dest, i8* %src) nounwind
|
|
define void @test3(i8* %src) {
|
|
; CHECK-LABEL: @test3(
|
|
%B = alloca [16 x i8]
|
|
%dest = getelementptr inbounds [16 x i8], [16 x i8]* %B, i64 0, i64 0
|
|
; CHECK-NOT: @strcat
|
|
%call = call i8* @strcat(i8* %dest, i8* %src)
|
|
; CHECK: ret void
|
|
ret void
|
|
}
|
|
|
|
declare i8* @strncat(i8* %dest, i8* %src, i32 %n) nounwind
|
|
define void @test4(i8* %src) {
|
|
; CHECK-LABEL: @test4(
|
|
%B = alloca [16 x i8]
|
|
%dest = getelementptr inbounds [16 x i8], [16 x i8]* %B, i64 0, i64 0
|
|
; CHECK-NOT: @strncat
|
|
%call = call i8* @strncat(i8* %dest, i8* %src, i32 12)
|
|
; CHECK: ret void
|
|
ret void
|
|
}
|
|
|
|
define void @test5(i8* nocapture %src) {
|
|
; CHECK-LABEL: @test5(
|
|
%dest = alloca [100 x i8], align 16
|
|
%arraydecay = getelementptr inbounds [100 x i8], [100 x i8]* %dest, i64 0, i64 0
|
|
%call = call i8* @strcpy(i8* %arraydecay, i8* %src)
|
|
; CHECK: %call = call i8* @strcpy
|
|
%arrayidx = getelementptr inbounds i8, i8* %call, i64 10
|
|
store i8 97, i8* %arrayidx, align 1
|
|
ret void
|
|
}
|
|
|
|
declare void @user(i8* %p)
|
|
define void @test6(i8* %src) {
|
|
; CHECK-LABEL: @test6(
|
|
%B = alloca [16 x i8]
|
|
%dest = getelementptr inbounds [16 x i8], [16 x i8]* %B, i64 0, i64 0
|
|
; CHECK: @strcpy
|
|
%call = call i8* @strcpy(i8* %dest, i8* %src)
|
|
; CHECK: @user
|
|
call void @user(i8* %dest)
|
|
; CHECK: ret void
|
|
ret void
|
|
}
|
|
|