RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2024-12-29 07:53:33 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Added support symbolic floating point constants in the MC assembler for Infinity

Browse Source 
and Nans with the same strings as GAS supports.  rdar://8673024


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128488 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kevin Enderby 2011-03-29 21:11:52 +00:00
parent 5726005e4f
commit 360d8d7a02
2 changed files with 17 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
lib/MC/MCParser/AsmParser.cpp
View File

@ -1552,13 +1552,21 @@ bool AsmParser::ParseDirectiveRealValue(const fltSemantics &Semantics) {
Lex();
if (getLexer().isNot(AsmToken::Integer) &&
getLexer().isNot(AsmToken::Real))
getLexer().isNot(AsmToken::Real) &&
getLexer().isNot(AsmToken::Identifier))
return TokError("unexpected token in directive");
// Convert to an APFloat.
APFloat Value(Semantics);
if (Value.convertFromString(getTok().getString(),
APFloat::rmNearestTiesToEven) ==
StringRef IDVal = getTok().getString();
if (getLexer().is(AsmToken::Identifier)) {
if (!IDVal.compare_lower("infinity") || !IDVal.compare_lower("inf"))
Value = APFloat::getInf(Semantics);
else if (!IDVal.compare_lower("nan"))
Value = APFloat::getNaN(Semantics, false, ~0);
else
return TokError("invalid floating point literal");
} else if (Value.convertFromString(IDVal, APFloat::rmNearestTiesToEven) ==
APFloat::opInvalidOp)
return TokError("invalid floating point literal");
if (IsNeg)

6
test/MC/AsmParser/floating-literals.s
View File

@ -6,6 +6,12 @@
# CHECK: .long 1082549862
.single 1.2455, +2.3, 3, + 4.2
# CHECK: .long 2139095040
.single InFinIty
# CHECK: .long 2147483647
.single nAN
# CHECK: .long 1067928519
.float 1.307