File: deadcode.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 (24 lines) | stat: -rw-r--r-- 496 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
; RUN: opt < %s -instcombine -S | grep {ret i32 %A}
; RUN: opt < %s -die -S | not grep call.*llvm.stacksave

define i32 @test(i32 %A) {
	%X = or i1 false, false		
	br i1 %X, label %T, label %C

T:		; preds = %0
	%B = add i32 %A, 1	
	br label %C

C:		; preds = %T, %0
	%C.upgrd.1 = phi i32 [ %B, %T ], [ %A, %0 ]
	ret i32 %C.upgrd.1
}

define i32* @test2(i32 %width) {
	%tmp = call i8* @llvm.stacksave( )
        %tmp14 = alloca i32, i32 %width
	ret i32* %tmp14
} 

declare i8* @llvm.stacksave()