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Make x86 test actually test x86 code generation. Fix the

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construct on ARM, which was breaking by coincidence, and add a similar 
testcase for ARM.

llvm-svn: 79719
This commit is contained in:
Eli Friedman 2009-08-22 03:13:10 +00:00
parent 641b94a562
commit 79615641f1
3 changed files with 15 additions and 4 deletions
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7
lib/Target/ARM/ARMISelLowering.cpp
View File

@ -2134,8 +2134,11 @@ static SDValue LowerShift(SDNode *N, SelectionDAG &DAG,
N->getOperand(0), NegatedCount);
}
assert(VT == MVT::i64 &&
(N->getOpcode() == ISD::SRL || N->getOpcode() == ISD::SRA) &&
// We can get here for a node like i32 = ISD::SHL i32, i64
if (VT != MVT::i64)
return SDValue();
assert((N->getOpcode() == ISD::SRL || N->getOpcode() == ISD::SRA) &&
"Unknown shift to lower!");
// We only lower SRA, SRL of 1 here, all others use generic lowering.

8
test/CodeGen/ARM/vshift_split.ll Normal file
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@ -0,0 +1,8 @@
; RUN: llvm-as < %s | llc -march=arm -mattr=-neon
; Example that requires splitting and expanding a vector shift.
define <2 x i64> @update(<2 x i64> %val) nounwind readnone {
entry:
%shr = lshr <2 x i64> %val, < i64 2, i64 2 > ; <<2 x i64>> [#uses=1]
ret <2 x i64> %shr
}

4
test/CodeGen/X86/vshift_split.ll
View File

@ -1,8 +1,8 @@
; RUN: llvm-as < %s | llc
; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2
; Example that requires splitting and expanding a vector shift.
define <2 x i64> @update(<2 x i64> %val) nounwind readnone {
entry:
%shr = lshr <2 x i64> %val, < i64 2, i64 2 > ; <<2 x i64>> [#uses=1]
%shr = lshr <2 x i64> %val, < i64 2, i64 3 >
ret <2 x i64> %shr
}