File: 2008-06-13-ReadOnlyCallStore.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 (19 lines) | stat: -rw-r--r-- 422 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
; RUN: opt < %s -instcombine -S | grep {store i8} | count 2

define i32 @a(i8* %s) nounwind  {
entry:
	store i8 0, i8* %s, align 1 ; This store cannot be eliminated!
	%tmp3 = call i32 @strlen( i8* %s ) nounwind readonly
	%tmp5 = icmp ne i32 %tmp3, 0
	br i1 %tmp5, label %bb, label %bb8

bb:		; preds = %entry
	store i8 0, i8* %s, align 1
	br label %bb8

bb8:
	ret i32 %tmp3
}

declare i32 @strlen(i8*) nounwind readonly