File: optionaldef-scheduling.ll

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16.1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,388 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 (18 lines) | stat: -rw-r--r-- 541 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 -mtriple=thumb-eabi %s -verify-machineinstrs -o - | FileCheck %s
; RUN: llc -mtriple=thumbv6-eabi %s -verify-machineinstrs -o - | FileCheck %s

define i1 @test(i64 %arg) {
entry:
  %ispos = icmp sgt i64 %arg, -1
  %neg = sub i64 0, %arg
  %sel = select i1 %ispos, i64 %arg, i64 %neg
  %cmp2 = icmp eq i64 %sel, %arg
  ret i1 %cmp2
}

; The scheduler used to ignore OptionalDefs, and could unwittingly insert
; a flag-setting instruction in between an ADDS and the corresponding ADC.

; CHECK: adds
; CHECK-NOT: eors
; CHECK: adcs