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
5 ; This tests codegen time inlining/optimization of memcmp
8 @.str = private constant [23 x i8] c"fooooooooooooooooooooo\00", align 1 ; <[23 x i8]*> [#uses=1]
10 declare i32 @memcmp(...)
12 define void @memcmp2(i8* %X, i8* %Y, i32* nocapture %P) nounwind {
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
19 store i32 4, i32* %P, align 4
22 return: ; preds = %entry
24 ; CHECK-LABEL: memcmp2:
25 ; CHECK: movw ([[A0:%rdi|%rcx]]), %ax
26 ; CHECK: cmpw ([[A1:%rsi|%rdx]]), %ax
27 ; NOBUILTIN-LABEL: memcmp2:
31 define void @memcmp2a(i8* %X, i32* nocapture %P) nounwind {
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
38 store i32 4, i32* %P, align 4
41 return: ; preds = %entry
43 ; CHECK-LABEL: memcmp2a:
44 ; CHECK: cmpw $28527, ([[A0]])
48 define void @memcmp4(i8* %X, i8* %Y, i32* nocapture %P) nounwind {
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
55 store i32 4, i32* %P, align 4
58 return: ; preds = %entry
60 ; CHECK-LABEL: memcmp4:
61 ; CHECK: movl ([[A0]]), %eax
62 ; CHECK: cmpl ([[A1]]), %eax
65 define void @memcmp4a(i8* %X, i32* nocapture %P) nounwind {
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
72 store i32 4, i32* %P, align 4
75 return: ; preds = %entry
77 ; CHECK-LABEL: memcmp4a:
78 ; CHECK: cmpl $1869573999, ([[A0]])
81 define void @memcmp8(i8* %X, i8* %Y, i32* nocapture %P) nounwind {
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
88 store i32 4, i32* %P, align 4
91 return: ; preds = %entry
93 ; CHECK-LABEL: memcmp8:
94 ; CHECK: movq ([[A0]]), %rax
95 ; CHECK: cmpq ([[A1]]), %rax
98 define void @memcmp8a(i8* %X, i32* nocapture %P) nounwind {
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
105 store i32 4, i32* %P, align 4
108 return: ; preds = %entry
110 ; CHECK-LABEL: memcmp8a:
111 ; CHECK: movabsq $8029759185026510694, %rax
112 ; CHECK: cmpq %rax, ([[A0]])