| ; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s |
| ; rdar://7329206 |
| |
| ; Use sbb x, x to materialize carry bit in a GPR. The value is either |
| ; all 1's or all 0's. |
| |
| define zeroext i16 @t1(i16 zeroext %x) nounwind readnone ssp { |
| entry: |
| ; CHECK: t1: |
| ; CHECK: seta %al |
| ; CHECK: movzbl %al, %eax |
| ; CHECK: shll $5, %eax |
| %0 = icmp ugt i16 %x, 26 ; <i1> [#uses=1] |
| %iftmp.1.0 = select i1 %0, i16 32, i16 0 ; <i16> [#uses=1] |
| ret i16 %iftmp.1.0 |
| } |
| |
| define zeroext i16 @t2(i16 zeroext %x) nounwind readnone ssp { |
| entry: |
| ; CHECK: t2: |
| ; CHECK: sbbl %eax, %eax |
| ; CHECK: andl $32, %eax |
| %0 = icmp ult i16 %x, 26 ; <i1> [#uses=1] |
| %iftmp.0.0 = select i1 %0, i16 32, i16 0 ; <i16> [#uses=1] |
| ret i16 %iftmp.0.0 |
| } |
| |
| define i64 @t3(i64 %x) nounwind readnone ssp { |
| entry: |
| ; CHECK: t3: |
| ; CHECK: sbbq %rax, %rax |
| ; CHECK: andq $64, %rax |
| %0 = icmp ult i64 %x, 18 ; <i1> [#uses=1] |
| %iftmp.2.0 = select i1 %0, i64 64, i64 0 ; <i64> [#uses=1] |
| ret i64 %iftmp.2.0 |
| } |