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X86: Replace variadic function with init list. NFC.

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llvm-svn: 230911
This commit is contained in:
Benjamin Kramer 2015-03-01 21:47:40 +00:00
parent ce7baceeed
commit cb2485d9c8
1 changed files with 27 additions and 32 deletions
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59
lib/Target/X86/X86ISelLowering.cpp
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@ -25,7 +25,6 @@
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/VariadicFunction.h"
#include "llvm/CodeGen/IntrinsicLowering.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
@ -23515,27 +23514,23 @@ bool X86TargetLowering::IsDesirableToPromoteOp(SDValue Op, EVT &PVT) const {
// X86 Inline Assembly Support
//===----------------------------------------------------------------------===//
namespace {
// Helper to match a string separated by whitespace.
bool matchAsmImpl(StringRef s, ArrayRef<const StringRef *> args) {
s = s.substr(s.find_first_not_of(" \t")); // Skip leading whitespace.
// Helper to match a string separated by whitespace.
static bool matchAsm(StringRef S, ArrayRef<const char *> Pieces) {
S = S.substr(S.find_first_not_of(" \t")); // Skip leading whitespace.
for (unsigned i = 0, e = args.size(); i != e; ++i) {
StringRef piece(*args[i]);
if (!s.startswith(piece)) // Check if the piece matches.
return false;
for (StringRef Piece : Pieces) {
if (!S.startswith(Piece)) // Check if the piece matches.
return false;
s = s.substr(piece.size());
StringRef::size_type pos = s.find_first_not_of(" \t");
if (pos == 0) // We matched a prefix.
return false;
S = S.substr(Piece.size());
StringRef::size_type Pos = S.find_first_not_of(" \t");
if (Pos == 0) // We matched a prefix.
return false;
s = s.substr(pos);
}
return s.empty();
S = S.substr(Pos);
}
const VariadicFunction1<bool, StringRef, StringRef, matchAsmImpl> matchAsm={};
return S.empty();
}
static bool clobbersFlagRegisters(const SmallVector<StringRef, 4> &AsmPieces) {
@ -23575,12 +23570,12 @@ bool X86TargetLowering::ExpandInlineAsm(CallInst *CI) const {
// ops instead of emitting the bswap asm. For now, we don't support 486 or
// lower so don't worry about this.
// bswap $0
if (matchAsm(AsmPieces[0], "bswap", "$0") ||
matchAsm(AsmPieces[0], "bswapl", "$0") ||
matchAsm(AsmPieces[0], "bswapq", "$0") ||
matchAsm(AsmPieces[0], "bswap", "${0:q}") ||
matchAsm(AsmPieces[0], "bswapl", "${0:q}") ||
matchAsm(AsmPieces[0], "bswapq", "${0:q}")) {
if (matchAsm(AsmPieces[0], {"bswap", "$0"}) ||
matchAsm(AsmPieces[0], {"bswapl", "$0"}) ||
matchAsm(AsmPieces[0], {"bswapq", "$0"}) ||
matchAsm(AsmPieces[0], {"bswap", "${0:q}"}) ||
matchAsm(AsmPieces[0], {"bswapl", "${0:q}"}) ||
matchAsm(AsmPieces[0], {"bswapq", "${0:q}"})) {
// No need to check constraints, nothing other than the equivalent of
// "=r,0" would be valid here.
return IntrinsicLowering::LowerToByteSwap(CI);
@ -23589,8 +23584,8 @@ bool X86TargetLowering::ExpandInlineAsm(CallInst *CI) const {
// rorw $$8, ${0:w} --> llvm.bswap.i16
if (CI->getType()->isIntegerTy(16) &&
IA->getConstraintString().compare(0, 5, "=r,0,") == 0 &&
(matchAsm(AsmPieces[0], "rorw", "$$8,", "${0:w}") ||
matchAsm(AsmPieces[0], "rolw", "$$8,", "${0:w}"))) {
(matchAsm(AsmPieces[0], {"rorw", "$$8,", "${0:w}"}) ||
matchAsm(AsmPieces[0], {"rolw", "$$8,", "${0:w}"}))) {
AsmPieces.clear();
const std::string &ConstraintsStr = IA->getConstraintString();
SplitString(StringRef(ConstraintsStr).substr(5), AsmPieces, ",");
@ -23602,9 +23597,9 @@ bool X86TargetLowering::ExpandInlineAsm(CallInst *CI) const {
case 3:
if (CI->getType()->isIntegerTy(32) &&
IA->getConstraintString().compare(0, 5, "=r,0,") == 0 &&
matchAsm(AsmPieces[0], "rorw", "$$8,", "${0:w}") &&
matchAsm(AsmPieces[1], "rorl", "$$16,", "$0") &&
matchAsm(AsmPieces[2], "rorw", "$$8,", "${0:w}")) {
matchAsm(AsmPieces[0], {"rorw", "$$8,", "${0:w}"}) &&
matchAsm(AsmPieces[1], {"rorl", "$$16,", "$0"}) &&
matchAsm(AsmPieces[2], {"rorw", "$$8,", "${0:w}"})) {
AsmPieces.clear();
const std::string &ConstraintsStr = IA->getConstraintString();
SplitString(StringRef(ConstraintsStr).substr(5), AsmPieces, ",");
@ -23619,9 +23614,9 @@ bool X86TargetLowering::ExpandInlineAsm(CallInst *CI) const {
Constraints[0].Codes.size() == 1 && Constraints[0].Codes[0] == "A" &&
Constraints[1].Codes.size() == 1 && Constraints[1].Codes[0] == "0") {
// bswap %eax / bswap %edx / xchgl %eax, %edx -> llvm.bswap.i64
if (matchAsm(AsmPieces[0], "bswap", "%eax") &&
matchAsm(AsmPieces[1], "bswap", "%edx") &&
matchAsm(AsmPieces[2], "xchgl", "%eax,", "%edx"))
if (matchAsm(AsmPieces[0], {"bswap", "%eax"}) &&
matchAsm(AsmPieces[1], {"bswap", "%edx"}) &&
matchAsm(AsmPieces[2], {"xchgl", "%eax,", "%edx"}))
return IntrinsicLowering::LowerToByteSwap(CI);
}
}