| ; Test that the strcpy library call simplifier works correctly for ARM procedure calls |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| ; |
| ; This transformation requires the pointer size, as it assumes that size_t is |
| ; the size of a pointer. |
| target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" |
| |
| @hello = constant [6 x i8] c"hello\00" |
| @a = common global [32 x i8] zeroinitializer, align 1 |
| @b = common global [32 x i8] zeroinitializer, align 1 |
| |
| declare i8* @strcpy(i8*, i8*) |
| |
| define arm_aapcscc void @test_simplify1() { |
| ; CHECK-LABEL: @test_simplify1( |
| |
| %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 |
| %src = getelementptr [6 x i8], [6 x i8]* @hello, i32 0, i32 0 |
| |
| call arm_aapcscc i8* @strcpy(i8* %dst, i8* %src) |
| ; CHECK: @llvm.memcpy.p0i8.p0i8.i32 |
| ret void |
| } |
| |
| define arm_aapcscc i8* @test_simplify2() { |
| ; CHECK-LABEL: @test_simplify2( |
| |
| %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 |
| |
| %ret = call arm_aapcscc i8* @strcpy(i8* %dst, i8* %dst) |
| ; CHECK: ret i8* getelementptr inbounds ([32 x i8], [32 x i8]* @a, i32 0, i32 0) |
| ret i8* %ret |
| } |
| |
| define arm_aapcscc i8* @test_no_simplify1() { |
| ; CHECK-LABEL: @test_no_simplify1( |
| |
| %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 |
| %src = getelementptr [32 x i8], [32 x i8]* @b, i32 0, i32 0 |
| |
| %ret = call arm_aapcscc i8* @strcpy(i8* %dst, i8* %src) |
| ; CHECK: call arm_aapcscc i8* @strcpy |
| ret i8* %ret |
| } |
| |
| define arm_aapcs_vfpcc void @test_simplify1_vfp() { |
| ; CHECK-LABEL: @test_simplify1_vfp( |
| |
| %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 |
| %src = getelementptr [6 x i8], [6 x i8]* @hello, i32 0, i32 0 |
| |
| call arm_aapcs_vfpcc i8* @strcpy(i8* %dst, i8* %src) |
| ; CHECK: @llvm.memcpy.p0i8.p0i8.i32 |
| ret void |
| } |
| |
| define arm_aapcs_vfpcc i8* @test_simplify2_vfp() { |
| ; CHECK-LABEL: @test_simplify2_vfp( |
| |
| %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 |
| |
| %ret = call arm_aapcs_vfpcc i8* @strcpy(i8* %dst, i8* %dst) |
| ; CHECK: ret i8* getelementptr inbounds ([32 x i8], [32 x i8]* @a, i32 0, i32 0) |
| ret i8* %ret |
| } |
| |
| define arm_aapcs_vfpcc i8* @test_no_simplify1_vfp() { |
| ; CHECK-LABEL: @test_no_simplify1_vfp( |
| |
| %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 |
| %src = getelementptr [32 x i8], [32 x i8]* @b, i32 0, i32 0 |
| |
| %ret = call arm_aapcs_vfpcc i8* @strcpy(i8* %dst, i8* %src) |
| ; CHECK: call arm_aapcs_vfpcc i8* @strcpy |
| ret i8* %ret |
| } |