File: iabs.ll

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • 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 (16 lines) | stat: -rw-r--r-- 460 bytes parent folder | download | duplicates (37) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
; REQUIRES: asserts
; RUN: llc -verify-machineinstrs < %s -mtriple=ppc32-- -stats 2>&1 | \
; RUN:   grep "4 .*Number of machine instrs printed"

;; Integer absolute value, should produce something as good as:
;;      srawi r2, r3, 31
;;      add r3, r3, r2
;;      xor r3, r3, r2
;;      blr 
define i32 @test(i32 %a) {
        %tmp1neg = sub i32 0, %a
        %b = icmp sgt i32 %a, -1
        %abs = select i1 %b, i32 %a, i32 %tmp1neg
        ret i32 %abs
}