File: constp-rewrite-branches.ll

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (17 lines) | stat: -rw-r--r-- 406 bytes parent folder | download | duplicates (22) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
; RUN: llc -O2 -march=hexagon < %s | FileCheck %s

define i32 @foo(i32 %x) {
  %p = icmp eq i32 %x, 0
  br i1 %p, label %zero, label %nonzero
nonzero:
  %v1 = add i32 %x, 1
  %c = icmp eq i32 %x, %v1
; This branch will be rewritten by HCP.  A bug would cause both branches to
; go away, leaving no path to "ret -1".
  br i1 %c, label %zero, label %other
zero:
  ret i32 0
other:
; CHECK: -1
  ret i32 -1
}