File: coalescer-subreg.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (29 lines) | stat: -rw-r--r-- 806 bytes parent folder | download | duplicates (20) 
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
 
; RUN: llc -o - %s -verify-machineinstrs
; This used to crash when coalescing a regclass like GR16 which did not support
; the sub_8bit_hi subregister with a class like GR16_ABCD that did.
target triple = "x86_64-apple-macosx10.10.0"

define void @test() #0 {
entry:
  br i1 undef, label %loop, label %for.end597

loop:
  %0 = load i16, i16* null, align 4
  %1 = load i16, i16* undef, align 4
  %or1 = or i16 %1, %0
  %or2 = trunc i16 %or1 to i8
  store i8 %or2, i8* undef, align 4
  %2 = or i16 %1, %0
  %or3 = lshr i16 %2, 8
  %or4 = trunc i16 %or3 to i8
  store i8 %or4, i8* undef, align 1
  %3 = load i32, i32* undef, align 4
  %4 = load i32, i32* undef, align 4
  %or5 = or i32 %4, %3
  store i32 %or5, i32* undef, align 4
  store i32 0, i32* undef, align 4
  br label %loop

for.end597:
  ret void
}