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; 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: 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-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
}
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