llvm/test/CodeGen/X86/2008-03-19-DAGCombinerBug.ll

; RUN: llc < %s -march=x86

define i32 @t() nounwind  {
entry:
	%tmp54 = add i32 0, 1		; <i32> [#uses=1]
	br i1 false, label %bb71, label %bb77
bb71:		; preds = %entry
	%tmp74 = shl i32 %tmp54, 1		; <i32> [#uses=1]
	%tmp76 = ashr i32 %tmp74, 3		; <i32> [#uses=1]
	br label %bb77
bb77:		; preds = %bb71, %entry
	%payLoadSize.0 = phi i32 [ %tmp76, %bb71 ], [ 0, %entry ]		; <i32> [#uses=0]
	unreachable
}
Eliminate more uses of llvm-as and llvm-dis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81290 91177308-0d34-0410-b5e6-96231b3b80d8 2009-09-08 23:54:48 +00:00			`; RUN: llc < %s -march=x86`
Fix this xform: (sra (shl X, m), result_size) -> (sign_extend (trunc (shl X, result_size - n - m))) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48578 91177308-0d34-0410-b5e6-96231b3b80d8 2008-03-20 02:18:41 +00:00
			`define i32 @t() nounwind {`
			`entry:`
			`%tmp54 = add i32 0, 1 ; <i32> [#uses=1]`
			`br i1 false, label %bb71, label %bb77`
			`bb71: ; preds = %entry`
			`%tmp74 = shl i32 %tmp54, 1 ; <i32> [#uses=1]`
			`%tmp76 = ashr i32 %tmp74, 3 ; <i32> [#uses=1]`
			`br label %bb77`
			`bb77: ; preds = %bb71, %entry`
			`%payLoadSize.0 = phi i32 [ %tmp76, %bb71 ], [ 0, %entry ] ; <i32> [#uses=0]`
			`unreachable`
			`}`