File: select-select.ll

package info (click to toggle)
llvm-toolchain-6.0 1%3A6.0.1-10
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 598,080 kB
  • sloc: cpp: 3,046,253; ansic: 595,057; asm: 271,965; python: 128,926; objc: 106,554; sh: 21,906; lisp: 10,191; pascal: 6,094; ml: 5,544; perl: 5,265; makefile: 2,227; cs: 2,027; xml: 686; php: 212; csh: 117
file content (34 lines) | stat: -rw-r--r-- 1,120 bytes parent folder | download | duplicates (13)
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
; RUN: opt -instcombine -S < %s | FileCheck %s

; CHECK: @foo1
define float @foo1(float %a) #0 {
; CHECK-NOT: xor
  %b = fcmp ogt float %a, 0.000000e+00
  %c = select i1 %b, float %a, float 0.000000e+00
  %d = fcmp olt float %c, 1.000000e+00
  %f = select i1 %d, float %c, float 1.000000e+00
  ret float %f
}

; CHECK: @foo2
define float @foo2(float %a) #0 {
; CHECK-NOT: xor
  %b = fcmp ogt float %a, 0.000000e+00
  %c = select i1 %b, float %a, float 0.000000e+00
  %d = fcmp olt float %c, 1.000000e+00
  %e = select i1 %b, float %a, float 0.000000e+00
  %f = select i1 %d, float %e, float 1.000000e+00
  ret float %f
}

; CHECK-LABEL: @foo3
define <2 x i32> @foo3(<2 x i1> %vec_bool, i1 %bool, <2 x i32> %V) {
; CHECK: %[[sel0:.*]] = select <2 x i1> %vec_bool, <2 x i32> zeroinitializer, <2 x i32> %V
; CHECK: %[[sel1:.*]] = select i1 %bool, <2 x i32> %[[sel0]], <2 x i32> %V
; CHECK: ret <2 x i32> %[[sel1]]
  %sel0 = select <2 x i1> %vec_bool, <2 x i32> zeroinitializer, <2 x i32> %V
  %sel1 = select i1 %bool, <2 x i32> %sel0, <2 x i32> %V
  ret <2 x i32> %sel1
}

attributes #0 = { nounwind readnone ssp uwtable }