File: nocapture.ll

package info (click to toggle)
llvm-2.7 2.7-6
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 59,992 kB
  • ctags: 49,499
  • sloc: cpp: 373,792; ansic: 16,885; sh: 12,614; asm: 6,809; ada: 3,083; ml: 2,942; python: 2,671; perl: 2,404; makefile: 1,691; pascal: 1,235; exp: 399; objc: 291; lisp: 184; csh: 117; xml: 38; f90: 36
file content (14 lines) | stat: -rw-r--r-- 355 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
 
; RUN: opt < %s -basicaa -gvn -instcombine -S | grep {ret i32 0}

declare i32* @test(i32* nocapture)

define i32 @test2() {
       %P = alloca i32
       %Q = call i32* @test(i32* %P)
       %a = load i32* %P
       store i32 4, i32* %Q   ;; cannot clobber P since it is nocapture.
       %b = load i32* %P
       %c = sub i32 %a, %b
       ret i32 %c
}