| ; RUN: llc %s -o - -march=x86-64 | FileCheck %s |
| |
| ; This tests codegen time inlining/optimization of memcmp |
| ; rdar://6480398 |
| |
| @.str = private constant [23 x i8] c"fooooooooooooooooooooo\00", align 1 ; <[23 x i8]*> [#uses=1] |
| |
| declare i32 @memcmp(...) |
| |
| define void @memcmp2(i8* %X, i8* %Y, i32* nocapture %P) nounwind { |
| entry: |
| %0 = tail call i32 (...)* @memcmp(i8* %X, i8* %Y, i32 2) nounwind ; <i32> [#uses=1] |
| %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] |
| br i1 %1, label %return, label %bb |
| |
| bb: ; preds = %entry |
| store i32 4, i32* %P, align 4 |
| ret void |
| |
| return: ; preds = %entry |
| ret void |
| ; CHECK: memcmp2: |
| ; CHECK: movw (%rsi), %ax |
| ; CHECK: cmpw %ax, (%rdi) |
| } |
| |
| define void @memcmp2a(i8* %X, i32* nocapture %P) nounwind { |
| entry: |
| %0 = tail call i32 (...)* @memcmp(i8* %X, i8* getelementptr inbounds ([23 x i8]* @.str, i32 0, i32 1), i32 2) nounwind ; <i32> [#uses=1] |
| %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] |
| br i1 %1, label %return, label %bb |
| |
| bb: ; preds = %entry |
| store i32 4, i32* %P, align 4 |
| ret void |
| |
| return: ; preds = %entry |
| ret void |
| ; CHECK: memcmp2a: |
| ; CHECK: cmpw $28527, (%rdi) |
| } |
| |
| |
| define void @memcmp4(i8* %X, i8* %Y, i32* nocapture %P) nounwind { |
| entry: |
| %0 = tail call i32 (...)* @memcmp(i8* %X, i8* %Y, i32 4) nounwind ; <i32> [#uses=1] |
| %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] |
| br i1 %1, label %return, label %bb |
| |
| bb: ; preds = %entry |
| store i32 4, i32* %P, align 4 |
| ret void |
| |
| return: ; preds = %entry |
| ret void |
| ; CHECK: memcmp4: |
| ; CHECK: movl (%rsi), %eax |
| ; CHECK: cmpl %eax, (%rdi) |
| } |
| |
| define void @memcmp4a(i8* %X, i32* nocapture %P) nounwind { |
| entry: |
| %0 = tail call i32 (...)* @memcmp(i8* %X, i8* getelementptr inbounds ([23 x i8]* @.str, i32 0, i32 1), i32 4) nounwind ; <i32> [#uses=1] |
| %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] |
| br i1 %1, label %return, label %bb |
| |
| bb: ; preds = %entry |
| store i32 4, i32* %P, align 4 |
| ret void |
| |
| return: ; preds = %entry |
| ret void |
| ; CHECK: memcmp4a: |
| ; CHECK: cmpl $1869573999, (%rdi) |
| } |
| |
| define void @memcmp8(i8* %X, i8* %Y, i32* nocapture %P) nounwind { |
| entry: |
| %0 = tail call i32 (...)* @memcmp(i8* %X, i8* %Y, i32 8) nounwind ; <i32> [#uses=1] |
| %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] |
| br i1 %1, label %return, label %bb |
| |
| bb: ; preds = %entry |
| store i32 4, i32* %P, align 4 |
| ret void |
| |
| return: ; preds = %entry |
| ret void |
| ; CHECK: memcmp8: |
| ; CHECK: movq (%rsi), %rax |
| ; CHECK: cmpq %rax, (%rdi) |
| } |
| |
| define void @memcmp8a(i8* %X, i32* nocapture %P) nounwind { |
| entry: |
| %0 = tail call i32 (...)* @memcmp(i8* %X, i8* getelementptr inbounds ([23 x i8]* @.str, i32 0, i32 0), i32 8) nounwind ; <i32> [#uses=1] |
| %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] |
| br i1 %1, label %return, label %bb |
| |
| bb: ; preds = %entry |
| store i32 4, i32* %P, align 4 |
| ret void |
| |
| return: ; preds = %entry |
| ret void |
| ; CHECK: memcmp8a: |
| ; CHECK: movabsq $8029759185026510694, %rax |
| ; CHECK: cmpq %rax, (%rdi) |
| } |
| |