Sanjay Patel 0056820a48 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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218803 91177308-0d34-0410-b5e6-96231b3b80d8		2014-10-01 20:36:33 +00:00
..
Analysis	Move the complex address expression out of DIVariable and into an extra	2014-10-01 18:55:02 +00:00
Assembler	Move the complex address expression out of DIVariable and into an extra	2014-10-01 18:55:02 +00:00
Bindings	Extend C disassembler API to allow specifying target features	2014-09-30 16:31:40 +00:00
Bitcode	Ensure bitcode encoding stays stable.	2014-09-23 08:48:01 +00:00
BugPoint
CodeGen	[x86] Sort the ISA-specific RUN lines for vector-sext.ll to go from	2014-10-01 20:32:44 +00:00
DebugInfo	Move the complex address expression out of DIVariable and into an extra	2014-10-01 18:55:02 +00:00
ExecutionEngine	[MCJIT] Make sure we test ARM BR24 relocations with both internal and external	2014-09-11 22:43:36 +00:00
Feature	[AArch64] Update test case to pass with post-RA MI scheduler.	2014-09-13 03:23:23 +00:00
FileCheck
Instrumentation	Move the complex address expression out of DIVariable and into an extra	2014-10-01 18:55:02 +00:00
Integer
JitListener	Move the complex address expression out of DIVariable and into an extra	2014-10-01 18:55:02 +00:00
Linker	Move the complex address expression out of DIVariable and into an extra	2014-10-01 18:55:02 +00:00
LTO	LTO: Add missing target triple from r218784	2014-10-01 18:49:58 +00:00
MC	[AArch64] Allow access to all system registers with MRS/MSR instructions.	2014-10-01 10:13:59 +00:00
Object	Nuke MCAnalysis.	2014-09-02 22:32:20 +00:00
Other	[lit] Parse all strings as UTF-8 rather than ASCII.	2014-09-12 16:46:05 +00:00
TableGen	[AVX512] Added intrinsics for VPCMPEQB and VPCMPEQW.	2014-09-30 11:32:22 +00:00
tools	Revert r218673 'llvm-cov: add test for report's function & file association.'	2014-09-30 14:48:12 +00:00
Transforms	Make the sqrt intrinsic return undef for a negative input.	2014-10-01 20:36:33 +00:00
Unit
Verifier	Verifier: Don't reject varargs callee cleanup functions	2014-08-29 21:25:28 +00:00
YAMLParser
.clang-format
CMakeLists.txt	Add LLVMgold target to test dependencies.	2014-09-10 22:20:49 +00:00
lit.cfg	pass environment when invoking llvm-config from lit.cfg	2014-09-24 18:37:48 +00:00
lit.site.cfg.in
Makefile
Makefile.tests
TestRunner.sh