File: fcmp-fast.ll

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,436 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (23 lines) | stat: -rw-r--r-- 700 bytes parent folder | download | duplicates (26)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
; RUN: llvm-as < %s | llvm-dis > %t0
; RUN: opt -S < %s > %t1
; RUN: diff %t0 %t1
; RUN: FileCheck < %t1 %s

; Make sure fast math flags on fcmp instructions are serialized/deserialized properly.

define i1 @foo(float %a, float %b, double %c, double %d) {
  ; CHECK:   %plain = fcmp ueq float %a, %b
  %plain = fcmp ueq float %a, %b
  ; CHECK:   %fast = fcmp fast olt float %a, %b
  %fast = fcmp fast olt float %a, %b
  ; CHECK:   %nsz = fcmp nsz uge float %a, %b
  %nsz = fcmp nsz uge float %a, %b
  ; CHECK:   %nnan = fcmp nnan nsz oge double %c, %d
  %nnan = fcmp nnan nsz oge double %c, %d

  %dce1 = or i1 %plain, %fast
  %dce2 = or i1 %dce1, %nsz
  %dce3 = or i1 %dce2, %nnan

  ret i1 %dce3
}