llvm-mirror/test/CodeGen/X86/2008-06-18-BadShuffle.ll

; RUN: llc < %s -march=x86 -mcpu=i386 -mattr=+sse2 | grep pinsrw

; Test to make sure we actually insert the bottom element of the vector
define <8 x i16> @a(<8 x i16> %a) nounwind  {
entry:
	shufflevector <8 x i16> %a, <8 x i16> zeroinitializer, <8 x i32> < i32 0, i32 8, i32 8, i32 8, i32 8, i32 8, i32 8, i32 8 >
	%add = add <8 x i16> %0, %a
	ret <8 x i16> %add
}
Eliminate more uses of llvm-as and llvm-dis. llvm-svn: 81290 2009-09-09 01:54:48 +02:00			`; RUN: llc < %s -march=x86 -mcpu=i386 -mattr=+sse2 \| grep pinsrw`
Fix a bug with <8 x i16> shuffle lowering on X86 where parts of the shuffle could be skipped. The check is invalid because the loop index i doesn't correspond to the element actually inserted. The correct check is already done a few lines earlier, for whether the element is already in the right spot, so this shouldn't have any effect on the codegen for code that was already correct. llvm-svn: 52486 2008-06-19 08:09:51 +02:00
			`; Test to make sure we actually insert the bottom element of the vector`
			`define <8 x i16> @a(<8 x i16> %a) nounwind {`
			`entry:`
			`shufflevector <8 x i16> %a, <8 x i16> zeroinitializer, <8 x i32> < i32 0, i32 8, i32 8, i32 8, i32 8, i32 8, i32 8, i32 8 >`
			`%add = add <8 x i16> %0, %a`
			`ret <8 x i16> %add`
			`}`