File: 2008-06-19-UncondLoad.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 (16 lines) | stat: -rw-r--r-- 504 bytes parent folder | download | duplicates (12) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
; RUN: opt < %s -passes=instcombine -S | grep load | count 3
; PR2471

declare i32 @x(ptr)
define i32 @b(ptr %a, ptr %b) {
entry:
        %tmp1 = load i32, ptr %a            
        %tmp3 = load i32, ptr %b           
        %add = add i32 %tmp1, %tmp3   
        %call = call i32 @x( ptr %a )
        %tobool = icmp ne i32 %add, 0
	; not safe to turn into an uncond load
        %cond = select i1 %tobool, ptr %b, ptr %a             
        %tmp8 = load i32, ptr %cond       
        ret i32 %tmp8
}