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Model :upper16: and :lower16: as ARM specific MCTargetExpr. This is a step

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in the right direction. It eliminated some hacks and will unblock codegen
work. But it's far from being done. It doesn't reject illegal expressions,
e.g. (FOO - :lower16:BAR). It also doesn't work in Thumb2 mode at all.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123369 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2011-01-13 07:58:56 +00:00
parent 04f5079ca1
commit 7597212abc
15 changed files with 248 additions and 90 deletions
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4
include/llvm/MC/MCExpr.h
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@@ -155,8 +155,6 @@ public:
VK_TPOFF,
VK_DTPOFF,
VK_TLVP, // Mach-O thread local variable relocation
VK_ARM_HI16, // The R_ARM_MOVT_ABS relocation (:upper16: in the .s file)
VK_ARM_LO16, // The R_ARM_MOVW_ABS_NC relocation (:lower16: in the .w file)
// FIXME: We'd really like to use the generic Kinds listed above for these.
VK_ARM_PLT, // ARM-style PLT references. i.e., (PLT) instead of @PLT
VK_ARM_TLSGD, // ditto for TLSGD, GOT, GOTOFF, TPOFF and GOTTPOFF
@@ -421,7 +419,7 @@ public:
virtual void PrintImpl(raw_ostream &OS) const = 0;
virtual bool EvaluateAsRelocatableImpl(MCValue &Res,
const MCAsmLayout *Layout) const = 0;
virtual void AddValueSymbols(MCAssembler *) const = 0;
static bool classof(const MCExpr *E) {
return E->getKind() == MCExpr::Target;