File: negation.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 (21 lines) | stat: -rw-r--r-- 597 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
20
21
 
; RUN: opt < %s -reassociate -instcombine -S | not grep sub

; Test that we can turn things like X*-(Y*Z) -> X*-1*Y*Z.

define i32 @test1(i32 %a, i32 %b, i32 %z) {
	%c = sub i32 0, %z		; <i32> [#uses=1]
	%d = mul i32 %a, %b		; <i32> [#uses=1]
	%e = mul i32 %c, %d		; <i32> [#uses=1]
	%f = mul i32 %e, 12345		; <i32> [#uses=1]
	%g = sub i32 0, %f		; <i32> [#uses=1]
	ret i32 %g
}

define i32 @test2(i32 %a, i32 %b, i32 %z) {
	%d = mul i32 %z, 40		; <i32> [#uses=1]
	%c = sub i32 0, %d		; <i32> [#uses=1]
	%e = mul i32 %a, %c		; <i32> [#uses=1]
	%f = sub i32 0, %e		; <i32> [#uses=1]
	ret i32 %f
}