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Fix a bug with extractelement on SPU.

Browse Source 
In the attached testcase, the element was
never extracted (missing rotate).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119973 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kalle Raiskila 2010-11-22 16:28:26 +00:00
parent cdfecc8759
commit d87e571e62
2 changed files with 14 additions and 2 deletions
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2
lib/Target/CellSPU/SPUISelLowering.cpp
View File

@ -1885,13 +1885,13 @@ static SDValue LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) {
if (PrevElt > 0 && SrcElt < MaxElts) {
if ((PrevElt == SrcElt - 1)
|| (PrevElt == MaxElts - 1 && SrcElt == 0)) {
rotamt = SrcElt-i;
PrevElt = SrcElt;
} else {
rotate = false;
}
} else if (i == 0 || (PrevElt==0 && SrcElt==1)) {
// First time or after a "wrap around"
rotamt = SrcElt-i;
PrevElt = SrcElt;
} else {
// This isn't a rotation, takes elements from vector 2

14
test/CodeGen/CellSPU/rotate_ops.ll
View File

@ -1,5 +1,5 @@
; RUN: llc < %s -march=cellspu -o %t1.s
; RUN: grep rot %t1.s | count 85
; RUN: grep rot %t1.s | count 86
; RUN: grep roth %t1.s | count 8
; RUN: grep roti.*5 %t1.s | count 1
; RUN: grep roti.*27 %t1.s | count 1
@ -8,6 +8,7 @@
; RUN grep rothi.*,.3 %t1.s | count 1
; RUN: grep andhi %t1.s | count 4
; RUN: grep shlhi %t1.s | count 4
; RUN: cat %t1.s | FileCheck %s
target datalayout = "E-p:32:32:128-f64:64:128-f32:32:128-i64:32:128-i32:32:128-i16:16:128-i8:8:128-i1:8:128-a0:0:128-v128:128:128-s0:128:128"
target triple = "spu"
@ -158,3 +159,14 @@ define i8 @rotri8(i8 %A) {
%D = or i8 %B, %C ; <i8> [#uses=1]
ret i8 %D
}
define <2 x float> @test1(<4 x float> %param )
{
; CHECK: test1
; CHECK: rotqbyi
%el = extractelement <4 x float> %param, i32 1
%vec1 = insertelement <1 x float> undef, float %el, i32 0
%rv = shufflevector <1 x float> %vec1, <1 x float> undef, <2 x i32><i32 0,i32 0>
; CHECK: bi $lr
ret <2 x float> %rv
}