From aaf6cbdc7e368ebce35b95b9d596a739c7b234ff Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Tue, 14 Jan 2014 06:18:34 +0000 Subject: [PATCH] Switch the NEON register class from QPR to DPair. The already allocatable DPair superclass contains odd-even D register pair in addition to the even-odd pairs in the QPR register class. There is no reason to constrain the set of D register pairs that can be used for NEON values. Any NEON instructions that require a Q register will automatically constrain the register class to QPR. The allocation order for DPair begins with the QPR registers, so register allocation is unlikely to change much. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199186 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/ARM/ARMISelLowering.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp index 8b2366336db..1d2236f2c9f 100644 --- a/lib/Target/ARM/ARMISelLowering.cpp +++ b/lib/Target/ARM/ARMISelLowering.cpp @@ -156,7 +156,7 @@ void ARMTargetLowering::addDRTypeForNEON(MVT VT) { } void ARMTargetLowering::addQRTypeForNEON(MVT VT) { - addRegisterClass(VT, &ARM::QPRRegClass); + addRegisterClass(VT, &ARM::DPairRegClass); addTypeForNEON(VT, MVT::v2f64, MVT::v4i32); } -- 2.34.1