llvm-mirror/test/Transforms/SimplifyCFG/2008-09-17-SpeculativeHoist.ll

; RUN: opt < %s -simplifycfg -disable-output
; PR 2800

define void @foo() {
start:
	%tmp = call i1 @bar( )		; <i1> [#uses=4]
	br i1 %tmp, label %brtrue, label %brfalse

brtrue:		; preds = %start
	%tmpnew = and i1 %tmp, %tmp		; <i1> [#uses=1]
	br label %brfalse

brfalse:		; preds = %brtrue, %start
	%andandtmp.0 = phi i1 [ %tmp, %start ], [ %tmpnew, %brtrue ]		; <i1> [#uses=0]
	ret void
}

declare i1 @bar()
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 20:01:28 +02:00			`; RUN: opt < %s -simplifycfg -disable-output`
Do not hoist instruction above branch condition. The instruction may use branch condition. llvm-svn: 56286 2008-09-17 20:21:49 +02:00			`; PR 2800`

			`define void @foo() {`
			`start:`
			`%tmp = call i1 @bar( ) ; <i1> [#uses=4]`
			`br i1 %tmp, label %brtrue, label %brfalse`

			`brtrue: ; preds = %start`
			`%tmpnew = and i1 %tmp, %tmp ; <i1> [#uses=1]`
			`br label %brfalse`

			`brfalse: ; preds = %brtrue, %start`
			`%andandtmp.0 = phi i1 [ %tmp, %start ], [ %tmpnew, %brtrue ] ; <i1> [#uses=0]`
			`ret void`
			`}`

			`declare i1 @bar()`