1; Test that the strcpy library call simplifier works correctly for ARM procedure calls 2; RUN: opt < %s -instcombine -S | FileCheck %s 3; 4; This transformation requires the pointer size, as it assumes that size_t is 5; the size of a pointer. 6target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" 7 8@hello = constant [6 x i8] c"hello\00" 9@a = common global [32 x i8] zeroinitializer, align 1 10@b = common global [32 x i8] zeroinitializer, align 1 11 12declare i8* @strcpy(i8*, i8*) 13 14define arm_aapcscc void @test_simplify1() { 15; CHECK-LABEL: @test_simplify1( 16 17 %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 18 %src = getelementptr [6 x i8], [6 x i8]* @hello, i32 0, i32 0 19 20 call arm_aapcscc i8* @strcpy(i8* %dst, i8* %src) 21; CHECK: @llvm.memcpy.p0i8.p0i8.i32 22 ret void 23} 24 25define arm_aapcscc i8* @test_simplify2() { 26; CHECK-LABEL: @test_simplify2( 27 28 %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 29 30 %ret = call arm_aapcscc i8* @strcpy(i8* %dst, i8* %dst) 31; CHECK: ret i8* getelementptr inbounds ([32 x i8], [32 x i8]* @a, i32 0, i32 0) 32 ret i8* %ret 33} 34 35define arm_aapcscc i8* @test_no_simplify1() { 36; CHECK-LABEL: @test_no_simplify1( 37 38 %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 39 %src = getelementptr [32 x i8], [32 x i8]* @b, i32 0, i32 0 40 41 %ret = call arm_aapcscc i8* @strcpy(i8* %dst, i8* %src) 42; CHECK: call arm_aapcscc i8* @strcpy 43 ret i8* %ret 44} 45 46define arm_aapcs_vfpcc void @test_simplify1_vfp() { 47; CHECK-LABEL: @test_simplify1_vfp( 48 49 %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 50 %src = getelementptr [6 x i8], [6 x i8]* @hello, i32 0, i32 0 51 52 call arm_aapcs_vfpcc i8* @strcpy(i8* %dst, i8* %src) 53; CHECK: @llvm.memcpy.p0i8.p0i8.i32 54 ret void 55} 56 57define arm_aapcs_vfpcc i8* @test_simplify2_vfp() { 58; CHECK-LABEL: @test_simplify2_vfp( 59 60 %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 61 62 %ret = call arm_aapcs_vfpcc i8* @strcpy(i8* %dst, i8* %dst) 63; CHECK: ret i8* getelementptr inbounds ([32 x i8], [32 x i8]* @a, i32 0, i32 0) 64 ret i8* %ret 65} 66 67define arm_aapcs_vfpcc i8* @test_no_simplify1_vfp() { 68; CHECK-LABEL: @test_no_simplify1_vfp( 69 70 %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 71 %src = getelementptr [32 x i8], [32 x i8]* @b, i32 0, i32 0 72 73 %ret = call arm_aapcs_vfpcc i8* @strcpy(i8* %dst, i8* %src) 74; CHECK: call arm_aapcs_vfpcc i8* @strcpy 75 ret i8* %ret 76} 77