File: umul-with-overflow.ll

package info (click to toggle)
llvm-2.9 2.9%2Bdfsg-7
  • links: PTS, VCS
  • area: main
  • in suites: wheezy
  • size: 69,236 kB
  • sloc: cpp: 439,289; ansic: 16,211; asm: 13,295; sh: 12,912; python: 4,459; ml: 4,274; perl: 2,093; makefile: 1,808; pascal: 1,481; exp: 427; objc: 334; xml: 283; ada: 235; lisp: 187; csh: 117; f90: 36
file content (14 lines) | stat: -rw-r--r-- 358 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
 
; RUN: llc < %s -march=x86 | FileCheck %s

declare {i32, i1} @llvm.umul.with.overflow.i32(i32 %a, i32 %b)
define i1 @a(i32 %x) zeroext nounwind {
  %res = call {i32, i1} @llvm.umul.with.overflow.i32(i32 %x, i32 3)
  %obil = extractvalue {i32, i1} %res, 1
  ret i1 %obil
  
; CHECK: a:
; CHECK: mull
; CHECK: seto %al
; CHECK: movzbl	%al, %eax
; CHECK: ret
}