Chris Lattner 3a8e675c03 By far, one of the most common uses of isnan is to make 'isunordered' ... comparisons. In an 'isunordered' predicate, which looks like this at the LLVM level: %a = call bool %llvm.isnan(double %X) %b = call bool %llvm.isnan(double %Y) %COM = or bool %a, %b We used to generate this code: fxch %ST(1) fucomip %ST(0), %ST(0) setp %AL fucomip %ST(0), %ST(0) setp %AH or %AL, %AH With this patch, we generate this code: fucomip %ST(0), %ST(1) fstp %ST(0) setp %AL Which should make alkis happy. Tested as X86/compare_folding.llx:test1 llvm-svn: 14148		2004-06-11 05:33:49 +00:00
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.cvsignore	Tell CVS to ignore all .inc files	2003-08-03 15:50:17 +00:00
FloatingPoint.cpp	Fix bug in previous checkin	2004-06-11 05:22:44 +00:00
InstSelectPattern.cpp	Clean up a lot of the code I added yesterday by exposing the IntrinsicLowering	2003-12-28 21:23:38 +00:00
InstSelectSimple.cpp	By far, one of the most common uses of isnan is to make 'isunordered'	2004-06-11 05:33:49 +00:00
Makefile	Tablgen files for really simple instruction selector	2004-04-06 19:34:00 +00:00
PeepholeOptimizer.cpp	Convert to the new TargetMachine interface.	2004-06-02 05:55:25 +00:00
Printer.cpp	Convert to the new TargetMachine interface.	2004-06-02 05:55:25 +00:00
X86.h	Tablgen files for really simple instruction selector	2004-04-06 19:34:00 +00:00
X86.td	Add support for the printImplicitDefsBefore flag	2004-04-13 17:18:39 +00:00
X86CodeEmitter.cpp	Convert to the new TargetMachine interface.	2004-06-02 05:55:25 +00:00
X86InstrBuilder.h	Add assertion for scale verification.	2004-03-04 18:05:02 +00:00
X86InstrInfo.cpp	A big X86 instruction rename. The instructions are renamed to make	2004-02-29 08:50:03 +00:00
X86InstrInfo.h	Introduce a new FP instruction type to separate the compare cases from the	2004-06-11 04:41:24 +00:00
X86InstrInfo.td	No really, these are dead now	2004-06-11 04:50:14 +00:00
X86InstrSel.td	Tablgen files for really simple instruction selector	2004-04-06 19:34:00 +00:00
X86InstrSelInfo.td	Tablgen files for really simple instruction selector	2004-04-06 19:34:00 +00:00
X86JITInfo.h	Clean up a lot of the code I added yesterday by exposing the IntrinsicLowering	2003-12-28 21:23:38 +00:00
X86RegisterInfo.cpp	Add support for the setp instructions	2004-06-11 04:30:06 +00:00
X86RegisterInfo.h	Another API change to MRegisterInfo::foldMemoryOperand. Instead of a	2004-03-14 20:14:27 +00:00
X86RegisterInfo.td	Improve allocation order:	2004-02-29 09:17:01 +00:00
X86SimpInstrSelector.cpp	Now that compare instructions aren't lumped in with the other twoargfp instructions,	2004-06-11 04:49:02 +00:00
X86TargetMachine.cpp	Fix the fixed stack offset, patch contributed by Vladimir Prus	2004-06-10 06:19:25 +00:00
X86TargetMachine.h	Convert to the new TargetMachine interface.	2004-06-02 05:55:25 +00:00