| ; Test that the StrCpyOptimizer works correctly |
| ; RUN: opt < %s -simplify-libcalls -S | FileCheck %s |
| |
| ; This transformation requires the pointer size, as it assumes that size_t is |
| ; the size of a pointer. |
| target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32" |
| |
| @hello = constant [6 x i8] c"hello\00" |
| |
| declare i8* @strcpy(i8*, i8*) |
| |
| declare i8* @__strcpy_chk(i8*, i8*, i32) nounwind |
| |
| declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly |
| |
| ; rdar://6839935 |
| |
| define i32 @t1() { |
| ; CHECK: @t1 |
| %target = alloca [1024 x i8] |
| %arg1 = getelementptr [1024 x i8]* %target, i32 0, i32 0 |
| %arg2 = getelementptr [6 x i8]* @hello, i32 0, i32 0 |
| %rslt1 = call i8* @strcpy( i8* %arg1, i8* %arg2 ) |
| ; CHECK: @llvm.memcpy.p0i8.p0i8.i32 |
| ret i32 0 |
| } |
| |
| define i32 @t2() { |
| ; CHECK: @t2 |
| %target = alloca [1024 x i8] |
| %arg1 = getelementptr [1024 x i8]* %target, i32 0, i32 0 |
| %arg2 = getelementptr [6 x i8]* @hello, i32 0, i32 0 |
| %tmp1 = call i32 @llvm.objectsize.i32(i8* %arg1, i1 false) |
| %rslt1 = call i8* @__strcpy_chk(i8* %arg1, i8* %arg2, i32 %tmp1) |
| ; CHECK: @__memcpy_chk |
| ret i32 0 |
| } |