1; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s 2; RUN: llc < %s -disable-simplify-libcalls -mtriple=x86_64-linux | FileCheck %s --check-prefix=NOBUILTIN 3; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s 4 5; This tests codegen time inlining/optimization of memcmp 6; rdar://6480398 7 8@.str = private constant [23 x i8] c"fooooooooooooooooooooo\00", align 1 ; <[23 x i8]*> [#uses=1] 9 10declare i32 @memcmp(...) 11 12define void @memcmp2(i8* %X, i8* %Y, i32* nocapture %P) nounwind { 13entry: 14 %0 = tail call i32 (...)* @memcmp(i8* %X, i8* %Y, i32 2) nounwind ; <i32> [#uses=1] 15 %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] 16 br i1 %1, label %return, label %bb 17 18bb: ; preds = %entry 19 store i32 4, i32* %P, align 4 20 ret void 21 22return: ; preds = %entry 23 ret void 24; CHECK: memcmp2: 25; CHECK: movw ([[A0:%rdi|%rcx]]), %ax 26; CHECK: cmpw ([[A1:%rsi|%rdx]]), %ax 27; NOBUILTIN: memcmp2: 28; NOBUILTIN: callq 29} 30 31define void @memcmp2a(i8* %X, i32* nocapture %P) nounwind { 32entry: 33 %0 = tail call i32 (...)* @memcmp(i8* %X, i8* getelementptr inbounds ([23 x i8]* @.str, i32 0, i32 1), i32 2) nounwind ; <i32> [#uses=1] 34 %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] 35 br i1 %1, label %return, label %bb 36 37bb: ; preds = %entry 38 store i32 4, i32* %P, align 4 39 ret void 40 41return: ; preds = %entry 42 ret void 43; CHECK: memcmp2a: 44; CHECK: cmpw $28527, ([[A0]]) 45} 46 47 48define void @memcmp4(i8* %X, i8* %Y, i32* nocapture %P) nounwind { 49entry: 50 %0 = tail call i32 (...)* @memcmp(i8* %X, i8* %Y, i32 4) nounwind ; <i32> [#uses=1] 51 %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] 52 br i1 %1, label %return, label %bb 53 54bb: ; preds = %entry 55 store i32 4, i32* %P, align 4 56 ret void 57 58return: ; preds = %entry 59 ret void 60; CHECK: memcmp4: 61; CHECK: movl ([[A0]]), %eax 62; CHECK: cmpl ([[A1]]), %eax 63} 64 65define void @memcmp4a(i8* %X, i32* nocapture %P) nounwind { 66entry: 67 %0 = tail call i32 (...)* @memcmp(i8* %X, i8* getelementptr inbounds ([23 x i8]* @.str, i32 0, i32 1), i32 4) nounwind ; <i32> [#uses=1] 68 %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] 69 br i1 %1, label %return, label %bb 70 71bb: ; preds = %entry 72 store i32 4, i32* %P, align 4 73 ret void 74 75return: ; preds = %entry 76 ret void 77; CHECK: memcmp4a: 78; CHECK: cmpl $1869573999, ([[A0]]) 79} 80 81define void @memcmp8(i8* %X, i8* %Y, i32* nocapture %P) nounwind { 82entry: 83 %0 = tail call i32 (...)* @memcmp(i8* %X, i8* %Y, i32 8) nounwind ; <i32> [#uses=1] 84 %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] 85 br i1 %1, label %return, label %bb 86 87bb: ; preds = %entry 88 store i32 4, i32* %P, align 4 89 ret void 90 91return: ; preds = %entry 92 ret void 93; CHECK: memcmp8: 94; CHECK: movq ([[A0]]), %rax 95; CHECK: cmpq ([[A1]]), %rax 96} 97 98define void @memcmp8a(i8* %X, i32* nocapture %P) nounwind { 99entry: 100 %0 = tail call i32 (...)* @memcmp(i8* %X, i8* getelementptr inbounds ([23 x i8]* @.str, i32 0, i32 0), i32 8) nounwind ; <i32> [#uses=1] 101 %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] 102 br i1 %1, label %return, label %bb 103 104bb: ; preds = %entry 105 store i32 4, i32* %P, align 4 106 ret void 107 108return: ; preds = %entry 109 ret void 110; CHECK: memcmp8a: 111; CHECK: movabsq $8029759185026510694, %rax 112; CHECK: cmpq %rax, ([[A0]]) 113} 114 115