File: 2008-06-19-UncondLoad.ll

package info (click to toggle)
llvm-toolchain-4.0 1%3A4.0.1-10~deb9u2
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 493,332 kB
  • sloc: cpp: 2,698,100; ansic: 552,773; asm: 128,821; python: 121,589; objc: 105,054; sh: 21,174; lisp: 6,758; ml: 5,532; perl: 5,311; pascal: 5,245; makefile: 2,083; cs: 1,868; xml: 686; php: 212; csh: 117
file content (16 lines) | stat: -rw-r--r-- 506 bytes parent folder | download | duplicates (20)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
; RUN: opt < %s -instcombine -S | grep load | count 3
; PR2471

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