File: remat-float0.ll

package info (click to toggle)
llvm-toolchain-3.9 1%3A3.9.1-9
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 441,144 kB
  • ctags: 428,836
  • sloc: cpp: 2,546,577; ansic: 538,318; asm: 119,677; objc: 103,316; python: 102,148; sh: 27,847; pascal: 5,626; ml: 5,510; perl: 5,293; lisp: 4,801; makefile: 2,177; xml: 686; cs: 362; php: 212; csh: 117
file content (18 lines) | stat: -rw-r--r-- 661 bytes parent folder | download | duplicates (14)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
; RUN: llc < %s -mtriple=aarch64-none-linux-gnu -verify-machineinstrs | FileCheck %s

; Check that float 0 gets rematerialized with an fmov of zero reg instead
; of spilled/filled.

declare void @bar(float)

define void @foo() {
; CHECK-LABEL: foo:
; CHECK: fmov s0, wzr
; CHECK: bl bar
; CHECK: fmov s0, wzr
; CHECK: bl bar
  call void @bar(float 0.000000e+00)
  call void asm sideeffect "", "~{s0},~{s1},~{s2},~{s3},~{s4},~{s5},~{s6},~{s7},~{s8},~{s9},~{s10},~{s11},~{s12},~{s13},~{s14},~{s15},~{s16},~{s17},~{s18},~{s19},~{s20},~{s21},~{s22},~{s23},~{s24},~{s25},~{s26},~{s27},~{s28},~{s29},~{s30},~{s31}"()
  call void @bar(float 0.000000e+00)
  ret void
}