File: subreg-to-reg-0.ll

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8~deb9u3
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 733,456 kB
  • sloc: cpp: 3,776,651; ansic: 633,271; asm: 350,301; python: 142,716; objc: 107,612; sh: 22,626; lisp: 11,056; perl: 7,999; pascal: 6,742; ml: 5,537; awk: 3,536; makefile: 2,557; cs: 2,027; xml: 841; ruby: 156
file content (11 lines) | stat: -rw-r--r-- 274 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
 
; RUN: llc < %s -mtriple=x86_64-- | grep mov | count 1

; Do eliminate the zero-extension instruction and rely on
; x86-64's implicit zero-extension!

define i64 @foo(i32* %p) nounwind {
  %t = load i32, i32* %p
  %n = add i32 %t, 1
  %z = zext i32 %n to i64
  ret i64 %z
}