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Use a StringSwitch<> instead of a manually constructed string matcher. 

llvm-svn: 122530
This commit is contained in:
Jim Grosbach 2010-12-24 00:03:39 +00:00
parent 226ac14afb
commit ffaea0f017
1 changed files with 7 additions and 10 deletions
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17
llvm/lib/Target/ARM/AsmParser/ARMAsmLexer.cpp
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@ -13,6 +13,7 @@
#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCParser/MCAsmLexer.h"
@ -128,16 +129,12 @@ AsmToken ARMBaseAsmLexer::LexTokenUAL() {
// ip -> r12
// FIXME: Some assemblers support lots of others. Do we want them all?
if (!regID) {
if (lowerCase.size() == 3 && lowerCase[0] == 'r'
&& lowerCase[1] == '1') {
switch (lowerCase[2]) {
default: break;
case '3': regID = ARM::SP;
case '4': regID = ARM::LR;
case '5': regID = ARM::PC;
}
} else if (lowerCase == "ip")
regID = ARM::R12;
regID = StringSwitch<unsigned>(lowerCase)
.Case("r13", ARM::SP)
.Case("r14", ARM::LR)
.Case("r15", ARM::PC)
.Case("ip", ARM::R12)
.Default(0);
}
if (regID) {