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PR7781: Fix incorrect shifting in PPCTargetLowering::LowerBUILD_VECTOR.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109998 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman 2010-08-02 00:18:19 +00:00
parent 666b402243
commit e3837014d6
2 changed files with 14 additions and 10 deletions
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6
lib/Target/PowerPC/PPCISelLowering.cpp
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@ -3942,17 +3942,17 @@ SDValue PPCTargetLowering::LowerBUILD_VECTOR(SDValue Op,
}
// t = vsplti c, result = vsldoi t, t, 1
if (SextVal == ((i << 8) | (i >> (TypeShiftAmt-8)))) {
if (SextVal == ((i << 8) | (i < 0 ? 0xFF : 0))) {
SDValue T = BuildSplatI(i, SplatSize, MVT::v16i8, DAG, dl);
return BuildVSLDOI(T, T, 1, Op.getValueType(), DAG, dl);
}
// t = vsplti c, result = vsldoi t, t, 2
if (SextVal == ((i << 16) | (i >> (TypeShiftAmt-16)))) {
if (SextVal == ((i << 16) | (i < 0 ? 0xFFFF : 0))) {
SDValue T = BuildSplatI(i, SplatSize, MVT::v16i8, DAG, dl);
return BuildVSLDOI(T, T, 2, Op.getValueType(), DAG, dl);
}
// t = vsplti c, result = vsldoi t, t, 3
if (SextVal == ((i << 24) | (i >> (TypeShiftAmt-24)))) {
if (SextVal == ((i << 24) | (i < 0 ? 0xFFFFFF : 0))) {
SDValue T = BuildSplatI(i, SplatSize, MVT::v16i8, DAG, dl);
return BuildVSLDOI(T, T, 3, Op.getValueType(), DAG, dl);
}

18
test/CodeGen/PowerPC/vec_constants.ll
View File

@ -1,6 +1,6 @@
; RUN: llc < %s -march=ppc32 -mcpu=g5 | not grep CPI
define void @test1(<4 x i32>* %P1, <4 x i32>* %P2, <4 x float>* %P3) {
define void @test1(<4 x i32>* %P1, <4 x i32>* %P2, <4 x float>* %P3) nounwind {
%tmp = load <4 x i32>* %P1 ; <<4 x i32>> [#uses=1]
%tmp4 = and <4 x i32> %tmp, < i32 -2147483648, i32 -2147483648, i32 -2147483648, i32 -2147483648 > ; <<4 x i32>> [#uses=1]
store <4 x i32> %tmp4, <4 x i32>* %P1
@ -15,26 +15,30 @@ define void @test1(<4 x i32>* %P1, <4 x i32>* %P2, <4 x float>* %P3) {
ret void
}
define <4 x i32> @test_30() {
define <4 x i32> @test_30() nounwind {
ret <4 x i32> < i32 30, i32 30, i32 30, i32 30 >
}
define <4 x i32> @test_29() {
define <4 x i32> @test_29() nounwind {
ret <4 x i32> < i32 29, i32 29, i32 29, i32 29 >
}
define <8 x i16> @test_n30() {
define <8 x i16> @test_n30() nounwind {
ret <8 x i16> < i16 -30, i16 -30, i16 -30, i16 -30, i16 -30, i16 -30, i16 -30, i16 -30 >
}
define <16 x i8> @test_n104() {
define <16 x i8> @test_n104() nounwind {
ret <16 x i8> < i8 -104, i8 -104, i8 -104, i8 -104, i8 -104, i8 -104, i8 -104, i8 -104, i8 -104, i8 -104, i8 -104, i8 -104, i8 -104, i8 -104, i8 -104, i8 -104 >
}
define <4 x i32> @test_vsldoi() {
define <4 x i32> @test_vsldoi() nounwind {
ret <4 x i32> < i32 512, i32 512, i32 512, i32 512 >
}
define <4 x i32> @test_rol() {
define <8 x i16> @test_vsldoi_65023() nounwind {
ret <8 x i16> < i16 65023, i16 65023,i16 65023,i16 65023,i16 65023,i16 65023,i16 65023,i16 65023 >
}
define <4 x i32> @test_rol() nounwind {
ret <4 x i32> < i32 -11534337, i32 -11534337, i32 -11534337, i32 -11534337 >
}