llvm-6502/test/Transforms/SSI/2009-08-15-UnreachableBB.ll

; RUN: opt < %s -ssi-everything -disable-output

declare fastcc i32 @ras_Empty(i8** nocapture) nounwind readonly

define i32 @cc_Tautology() nounwind {
entry:
	unreachable

cc_InitData.exit:		; No predecessors!
	%0 = call fastcc i32 @ras_Empty(i8** undef) nounwind		; <i32> [#uses=1]
	%1 = icmp eq i32 %0, 0		; <i1> [#uses=1]
	br i1 %1, label %bb2, label %bb6

bb2:		; preds = %cc_InitData.exit
	unreachable

bb6:		; preds = %cc_InitData.exit
	ret i32 undef
}
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8 2009-09-11 18:01:28 +00:00			`; RUN: opt < %s -ssi-everything -disable-output`
SSI construction should just go ahead and ignore instructions in unreachable blocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79132 91177308-0d34-0410-b5e6-96231b3b80d8 2009-08-15 20:12:18 +00:00
			`declare fastcc i32 @ras_Empty(i8** nocapture) nounwind readonly`

			`define i32 @cc_Tautology() nounwind {`
			`entry:`
			`unreachable`

			`cc_InitData.exit: ; No predecessors!`
			`%0 = call fastcc i32 @ras_Empty(i8** undef) nounwind ; <i32> [#uses=1]`
			`%1 = icmp eq i32 %0, 0 ; <i1> [#uses=1]`
			`br i1 %1, label %bb2, label %bb6`

			`bb2: ; preds = %cc_InitData.exit`
			`unreachable`

			`bb6: ; preds = %cc_InitData.exit`
			`ret i32 undef`
			`}`