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author | Bob Wilson <bob.wilson@apple.com> | 2011-12-12 21:45:15 +0000 |
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committer | Bob Wilson <bob.wilson@apple.com> | 2011-12-12 21:45:15 +0000 |
commit | 9cd2b9562d23909937ab2e4bb45c2a1ed4c86816 (patch) | |
tree | 8d72ee2dcfc13a61e4e43f51bbe72433c168c005 /lib | |
parent | b4b54153ad760c69a00a08531abef4ed434a5092 (diff) | |
download | llvm-9cd2b9562d23909937ab2e4bb45c2a1ed4c86816.tar.gz llvm-9cd2b9562d23909937ab2e4bb45c2a1ed4c86816.tar.bz2 llvm-9cd2b9562d23909937ab2e4bb45c2a1ed4c86816.tar.xz |
Implement 'e' and 'f' modifiers for Neon inline asm. <rdar://problem/10551006>
These modifiers simply select either the low or high D subregister of a Neon
Q register. I've also removed the unimplemented 'p' modifier, which turns out
to be a bit different than the comment here suggests and as far as I can tell
was only intended for internal use in Apple's version of gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146417 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r-- | lib/Target/ARM/ARMAsmPrinter.cpp | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/lib/Target/ARM/ARMAsmPrinter.cpp b/lib/Target/ARM/ARMAsmPrinter.cpp index 876575c4ba..6ae287ae6c 100644 --- a/lib/Target/ARM/ARMAsmPrinter.cpp +++ b/lib/Target/ARM/ARMAsmPrinter.cpp @@ -493,11 +493,21 @@ bool ARMAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum, return false; } - // These modifiers are not yet supported. - case 'p': // The high single-precision register of a VFP double-precision - // register. case 'e': // The low doubleword register of a NEON quad register. - case 'f': // The high doubleword register of a NEON quad register. + case 'f': { // The high doubleword register of a NEON quad register. + if (!MI->getOperand(OpNum).isReg()) + return true; + unsigned Reg = MI->getOperand(OpNum).getReg(); + if (!ARM::QPRRegClass.contains(Reg)) + return true; + const TargetRegisterInfo *TRI = MF->getTarget().getRegisterInfo(); + unsigned SubReg = TRI->getSubReg(Reg, ExtraCode[0] == 'e' ? + ARM::dsub_0 : ARM::dsub_1); + O << ARMInstPrinter::getRegisterName(SubReg); + return false; + } + + // These modifiers are not yet supported. case 'h': // A range of VFP/NEON registers suitable for VLD1/VST1. case 'H': // The highest-numbered register of a pair. return true; |