| Tanya Lattner | 0ea4c8d | 2008-03-19 04:36:04 +0000 | [diff] [blame] | 1 | ; RUN: llvm-as < %s | opt -reassociate -instcombine | llvm-dis |\ | 
| Reid Spencer | a551c04 | 2007-04-15 09:21:47 +0000 | [diff] [blame] | 2 | ; RUN:   not grep {sub i32 0} | 
| Chris Lattner | ce7d145 | 2005-05-08 21:41:18 +0000 | [diff] [blame] | 3 |  | 
| Tanya Lattner | 0ea4c8d | 2008-03-19 04:36:04 +0000 | [diff] [blame] | 4 | define i32 @test(i32 %X, i32 %Y, i32 %Z) { | 
|  | 5 | %A = sub i32 0, %X		; <i32> [#uses=1] | 
|  | 6 | %B = mul i32 %A, %Y		; <i32> [#uses=1] | 
|  | 7 | ; (-X)*Y + Z -> Z-X*Y | 
|  | 8 | %C = add i32 %B, %Z		; <i32> [#uses=1] | 
|  | 9 | ret i32 %C | 
| Chris Lattner | ce7d145 | 2005-05-08 21:41:18 +0000 | [diff] [blame] | 10 | } |