a1f8ad145e
applied to our copy of llvm/clang. These can be applied in alphabetical order to a pristine llvm/clang 3.4 release source tree, to result in the same version used in FreeBSD. This is intended to clearly document all the changes until now, which mostly consist of cherry pickings from the respective upstream trunks, plus a number of hand-written FreeBSD-specific ones. Hopefully those can eventually be cleaned up and sent upstream too. MFC after: 1 week X-MFC-With: r263313
29 lines
1.1 KiB
Diff
29 lines
1.1 KiB
Diff
Pull in r199186 from upstream llvm trunk (by Jakob Stoklund Olesen):
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Switch the NEON register class from QPR to DPair.
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The already allocatable DPair superclass contains odd-even D register
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pair in addition to the even-odd pairs in the QPR register class. There
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is no reason to constrain the set of D register pairs that can be used
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for NEON values. Any NEON instructions that require a Q register will
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automatically constrain the register class to QPR.
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The allocation order for DPair begins with the QPR registers, so
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register allocation is unlikely to change much.
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Introduced here: http://svn.freebsd.org/changeset/base/262261
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Index: lib/Target/ARM/ARMISelLowering.cpp
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===================================================================
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--- lib/Target/ARM/ARMISelLowering.cpp
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+++ lib/Target/ARM/ARMISelLowering.cpp
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@@ -156,7 +156,7 @@ void ARMTargetLowering::addDRTypeForNEON(MVT VT) {
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}
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void ARMTargetLowering::addQRTypeForNEON(MVT VT) {
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- addRegisterClass(VT, &ARM::QPRRegClass);
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+ addRegisterClass(VT, &ARM::DPairRegClass);
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addTypeForNEON(VT, MVT::v2f64, MVT::v4i32);
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}
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