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[AArch64InstPrinter] Use the feature bits of the subtarget passed to the print

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method.

This enables the instprinter to print a different system register name based on
the feature bits of the per-function subtarget. 

Differential Revision: http://reviews.llvm.org/D8668 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233412 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka 2015-03-27 20:37:20 +00:00
parent f09378397e
commit f2f2ef70a0
2 changed files with 14 additions and 6 deletions
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9
lib/Target/AArch64/InstPrinter/AArch64InstPrinter.cpp
View File

@ -36,10 +36,7 @@ AArch64InstPrinter::AArch64InstPrinter(const MCAsmInfo &MAI,
const MCInstrInfo &MII,
const MCRegisterInfo &MRI,
const MCSubtargetInfo &STI)
: MCInstPrinter(MAI, MII, MRI) {
// Initialize the set of available features.
setAvailableFeatures(STI.getFeatureBits());
}
: MCInstPrinter(MAI, MII, MRI) {}
AArch64AppleInstPrinter::AArch64AppleInstPrinter(const MCAsmInfo &MAI,
const MCInstrInfo &MII,
@ -1305,7 +1302,7 @@ void AArch64InstPrinter::printMRSSystemRegister(const MCInst *MI, unsigned OpNo,
unsigned Val = MI->getOperand(OpNo).getImm();
auto Mapper = AArch64SysReg::MRSMapper();
std::string Name = Mapper.toString(Val, getAvailableFeatures());
std::string Name = Mapper.toString(Val, STI.getFeatureBits());
O << StringRef(Name).upper();
}
@ -1316,7 +1313,7 @@ void AArch64InstPrinter::printMSRSystemRegister(const MCInst *MI, unsigned OpNo,
unsigned Val = MI->getOperand(OpNo).getImm();
auto Mapper = AArch64SysReg::MSRMapper();
std::string Name = Mapper.toString(Val, getAvailableFeatures());
std::string Name = Mapper.toString(Val, STI.getFeatureBits());
O << StringRef(Name).upper();
}

11
test/CodeGen/AArch64/print-mrs-system-register.ll Normal file
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@ -0,0 +1,11 @@
; RUN: llc -mtriple=arm64-apple-darwin %s -o - | FileCheck %s
; CHECK: mrs x0, CPM_IOACC_CTL_EL3
define void @foo1() #0 {
entry:
tail call void asm sideeffect "mrs x0, cpm_ioacc_ctl_el3", ""()
ret void
}
attributes #0 = { "target-cpu"="cyclone" }