Mercurial > hg > Members > tobaru > cbc > CbC_llvm
view test/CodeGen/X86/test-nofold.ll @ 33:e4204d083e25
LLVM 3.5
author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
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date | Thu, 12 Dec 2013 14:32:10 +0900 |
parents | 95c75e76d11b |
children | 803732b1fca8 |
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; RUN: llc < %s -march=x86 -mcpu=yonah | FileCheck %s ; rdar://5752025 ; We want: ; CHECK: movl 4(%esp), %ecx ; CHECK-NEXT: andl $15, %ecx ; CHECK-NEXT: movl $42, %eax ; CHECK-NEXT: cmovel %ecx, %eax ; CHECK-NEXT: ret ; ; We don't want: ; movl 4(%esp), %eax ; movl %eax, %ecx # bad: extra copy ; andl $15, %ecx ; testl $15, %eax # bad: peep obstructed ; movl $42, %eax ; cmovel %ecx, %eax ; ret ; ; We also don't want: ; movl $15, %ecx # bad: larger encoding ; andl 4(%esp), %ecx ; movl $42, %eax ; cmovel %ecx, %eax ; ret ; ; We also don't want: ; movl 4(%esp), %ecx ; andl $15, %ecx ; testl %ecx, %ecx # bad: unnecessary test ; movl $42, %eax ; cmovel %ecx, %eax ; ret define i32 @t1(i32 %X) nounwind { entry: %tmp2 = and i32 %X, 15 ; <i32> [#uses=2] %tmp4 = icmp eq i32 %tmp2, 0 ; <i1> [#uses=1] %retval = select i1 %tmp4, i32 %tmp2, i32 42 ; <i32> [#uses=1] ret i32 %retval }