File: setcc.ll

package info (click to toggle)
llvm-toolchain-3.5 1%3A3.5-10
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 282,028 kB
  • ctags: 310,872
  • sloc: cpp: 1,883,926; ansic: 310,731; objc: 86,612; python: 79,565; asm: 65,844; sh: 9,829; makefile: 6,057; perl: 5,589; ml: 5,254; pascal: 3,285; lisp: 1,640; xml: 686; cs: 239; csh: 117
file content (36 lines) | stat: -rw-r--r-- 1,063 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
; 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: 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
}