| ; 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-LABEL: t1: |
| ; CHECK: xorl %eax, %eax |
| ; CHECK: seta %al |
| ; 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-LABEL: 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-LABEL: t3: |
| ; CHECK: sbbq %rax, %rax |
| ; CHECK: andl $64, %eax |
| %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 |
| } |
| |
| @v4 = common global i32 0, align 4 |
| |
| define i32 @t4(i32 %a) { |
| entry: |
| ; CHECK-LABEL: t4: |
| ; CHECK: movq _v4@GOTPCREL(%rip), %rax |
| ; CHECK: cmpl $1, (%rax) |
| ; CHECK: sbbl %eax, %eax |
| ; CHECK: andl $32768, %eax |
| ; CHECK: leal 65536(%rax,%rax), %eax |
| %0 = load i32, i32* @v4, align 4 |
| %not.tobool = icmp eq i32 %0, 0 |
| %conv.i = sext i1 %not.tobool to i16 |
| %call.lobit = lshr i16 %conv.i, 15 |
| %add.i.1 = add nuw nsw i16 %call.lobit, 1 |
| %conv4.2 = zext i16 %add.i.1 to i32 |
| %add = shl nuw nsw i32 %conv4.2, 16 |
| ret i32 %add |
| } |
| |
| define i8 @t5(i32 %a) #0 { |
| entry: |
| ; CHECK-LABEL: t5: |
| ; CHECK: testl %edi, %edi |
| ; CHECK: setns %al |
| %.lobit = lshr i32 %a, 31 |
| %trunc = trunc i32 %.lobit to i8 |
| %.not = xor i8 %trunc, 1 |
| ret i8 %.not |
| } |
| |
| define zeroext i1 @t6(i32 %a) #0 { |
| entry: |
| ; CHECK-LABEL: t6: |
| ; CHECK: testl %edi, %edi |
| ; CHECK: setns %al |
| %.lobit = lshr i32 %a, 31 |
| %trunc = trunc i32 %.lobit to i1 |
| %.not = xor i1 %trunc, 1 |
| ret i1 %.not |
| } |
| |
| attributes #0 = { "target-cpu"="skylake-avx512" } |