Sanjay Patel 790c02f096 Make the sqrt intrinsic return undef for a negative input. ... As discussed here: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20140609/220598.html And again here: http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-September/077168.html The sqrt of a negative number when using the llvm intrinsic is undefined. We should return undef rather than 0.0 to match the definition in the LLVM IR lang ref. This change should not affect any code that isn't using "no-nans-fp-math"; ie, no-nans is a requirement for generating the llvm intrinsic in place of a sqrt function call. Unfortunately, the behavior introduced by this patch will not match current gcc, xlc, icc, and possibly other compilers. The current clang/llvm behavior of returning 0.0 doesn't either. We knowingly approve of this difference with the other compilers in an attempt to flag code that is invoking undefined behavior. A front-end warning should also try to convince the user that the program will fail: http://llvm.org/bugs/show_bug.cgi?id=21093 Differential Revision: http://reviews.llvm.org/D5527 llvm-svn: 218803		2014-10-01 20:36:33 +00:00
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Analysis	Make the sqrt intrinsic return undef for a negative input.	2014-10-01 20:36:33 +00:00
AsmParser	Make CallingConv::ID an alias of "unsigned".	2014-09-10 18:00:17 +00:00
Bitcode	Do not destroy external linkage when deleting function body	2014-09-23 12:54:19 +00:00
CodeGen	Move the complex address expression out of DIVariable and into an extra	2014-10-01 18:55:02 +00:00
DebugInfo	Store TypeUnits in a SmallVector<DWARFUnitSection> instead of a single DWARFUnitSection.	2014-09-29 13:56:39 +00:00
ExecutionEngine	[MCJIT] Turn the getSymbolAddress free function created in r218626 into a static	2014-10-01 04:11:13 +00:00
IR	DIBuilder: Encapsulate DIExpression's element type	2014-10-01 20:26:08 +00:00
IRReader	Pass a && to getLazyBitcodeModule.	2014-09-03 17:31:46 +00:00
LineEditor
Linker	Merge alignment of common GlobalValue.	2014-09-09 17:48:18 +00:00
LTO	LTO: Ignore disabled diagnostic remarks	2014-10-01 18:36:03 +00:00
MC	Extend C disassembler API to allow specifying target features	2014-09-30 16:31:40 +00:00
Object	Object: BSS/virtual sections don't have contents	2014-09-26 22:32:16 +00:00
Option	Add an overload of getLastArgNoClaim taking two OptSpecifiers.	2014-09-12 19:42:53 +00:00
ProfileData	llvm-cov: Use the number of executed functions for the function coverage metric.	2014-09-30 12:45:13 +00:00
Support	Move the complex address expression out of DIVariable and into an extra	2014-10-01 18:55:02 +00:00
TableGen	Refactoring: raw pointer -> unique_ptr	2014-09-25 19:55:58 +00:00
Target	Don't repeat function/variable name in comment. NFC.	2014-10-01 19:39:32 +00:00
Transforms	DIBuilder: Encapsulate DIExpression's element type	2014-10-01 20:26:08 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile