llvm-mirror/test/Transforms/InstCombine/2008-07-08-SubAnd.ll

; RUN: opt < %s -instcombine -S | grep -v {i32 8}
; PR2330

define i32 @a(i32 %a) nounwind  {
entry:
	%tmp2 = sub i32 8, %a		; <i32> [#uses=1]
	%tmp3 = and i32 %tmp2, 7		; <i32> [#uses=1]
	ret i32 %tmp3
}
Change tests from "opt %s" to "opt < %s" so that opt doesn't see the input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. llvm-svn: 81537 2009-09-11 18:01:28 +00:00			`; RUN: opt < %s -instcombine -S \| grep -v {i32 8}`
Reduce x - y to -y when we know the 'x' part will get masked off anyways. llvm-svn: 53271 2008-07-09 04:32:37 +00:00			`; PR2330`

			`define i32 @a(i32 %a) nounwind {`
			`entry:`
			`%tmp2 = sub i32 8, %a ; <i32> [#uses=1]`
			`%tmp3 = and i32 %tmp2, 7 ; <i32> [#uses=1]`
			`ret i32 %tmp3`
			`}`