File: copysign-casts.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 (28 lines) | stat: -rw-r--r-- 954 bytes parent folder | download
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
; RUN: llc < %s -asm-verbose=false | FileCheck %s

; DAGCombiner oddly folds casts into the rhs of copysign. Test that they get
; unfolded.

target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown-wasm"

declare double @copysign(double, double) nounwind readnone
declare float @copysignf(float, float) nounwind readnone

; CHECK-LABEL: fold_promote:
; CHECK: f64.promote/f32 $push0=, $pop{{[0-9]+}}{{$}}
; CHECK: f64.copysign    $push1=, $pop{{[0-9]+}}, $pop0{{$}}
define double @fold_promote(double %a, float %b) {
  %c = fpext float %b to double
  %t = call double @copysign(double %a, double %c)
  ret double %t
}

; CHECK-LABEL: fold_demote:{{$}}
; CHECK: f32.demote/f64  $push0=, $pop{{[0-9]+}}{{$}}
; CHECK: f32.copysign    $push1=, $pop{{[0-9]+}}, $pop0{{$}}
define float @fold_demote(float %a, double %b) {
  %c = fptrunc double %b to float
  %t = call float @copysignf(float %a, float %c)
  ret float %t
}