File: overflow-intrinsic-optimizations.ll

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (19 lines) | stat: -rw-r--r-- 538 bytes parent folder | download | duplicates (13) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
; RUN: llc %s -mtriple=i386 -o - | FileCheck %s

define i1 @no__mulodi4(i32 %a, i64 %b, ptr %c) {
; CHECK-LABEL: no__mulodi4:
; CHECK-NOT: calll __mulodi4
entry:
  %0 = sext i32 %a to i64
  %1 = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 %0, i64 %b)
  %2 = extractvalue { i64, i1 } %1, 1
  %3 = extractvalue { i64, i1 } %1, 0
  %4 = trunc i64 %3 to i32
  %5 = sext i32 %4 to i64
  %6 = icmp ne i64 %3, %5
  %7 = or i1 %2, %6
  store i32 %4, ptr %c, align 4
  ret i1 %7
}

declare { i64, i1 } @llvm.smul.with.overflow.i64(i64, i64)