From dc0de80f24a83336cb26dcb9ed1fa030142a504d Mon Sep 17 00:00:00 2001 From: Joey Gouly Date: Tue, 17 Sep 2013 09:54:57 +0000 Subject: [ARM] Fix the deprecation of MCR encodings that map to CP15{ISB,DSB,DMB}. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190862 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp | 33 +++++++++++++++++++------ 1 file changed, 25 insertions(+), 8 deletions(-) (limited to 'lib/Target/ARM/MCTargetDesc') diff --git a/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp b/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp index ea5d7ba5c5..64001b489f 100644 --- a/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp +++ b/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp @@ -33,15 +33,32 @@ using namespace llvm; static bool getMCRDeprecationInfo(MCInst &MI, MCSubtargetInfo &STI, std::string &Info) { - // Checks for the deprecated CP15ISB encoding: - // mcr pX, #0, rX, c7, c5, #4 - if (STI.getFeatureBits() & llvm::ARM::HasV8Ops && + if (STI.getFeatureBits() & llvm::ARM::HasV7Ops && + (MI.getOperand(0).isImm() && MI.getOperand(0).getImm() == 15) && (MI.getOperand(1).isImm() && MI.getOperand(1).getImm() == 0) && - (MI.getOperand(3).isImm() && MI.getOperand(3).getImm() == 7) && - (MI.getOperand(4).isImm() && MI.getOperand(4).getImm() == 5) && - (MI.getOperand(5).isImm() && MI.getOperand(5).getImm() == 4)) { - Info = "deprecated on armv8"; - return true; + // Checks for the deprecated CP15ISB encoding: + // mcr p15, #0, rX, c7, c5, #4 + (MI.getOperand(3).isImm() && MI.getOperand(3).getImm() == 7)) { + if ((MI.getOperand(5).isImm() && MI.getOperand(5).getImm() == 4)) { + if (MI.getOperand(4).isImm() && MI.getOperand(4).getImm() == 5) { + Info = "deprecated since v7, use 'isb'"; + return true; + } + + // Checks for the deprecated CP15DSB encoding: + // mcr p15, #0, rX, c7, c10, #4 + if (MI.getOperand(4).isImm() && MI.getOperand(4).getImm() == 10) { + Info = "deprecated since v7, use 'dsb'"; + return true; + } + } + // Checks for the deprecated CP15DMB encoding: + // mcr p15, #0, rX, c7, c10, #5 + if (MI.getOperand(4).isImm() && MI.getOperand(4).getImm() == 10 && + (MI.getOperand(5).isImm() && MI.getOperand(5).getImm() == 5)) { + Info = "deprecated since v7, use 'dmb'"; + return true; + } } return false; } -- cgit v1.2.3