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Sanjay Patel ad8b666624 Return undef on FP <-> Int conversions that overflow (PR21330). 
The LLVM Lang Ref states for signed/unsigned int to float conversions:
"If the value cannot fit in the floating point value, the results are undefined."

And for FP to signed/unsigned int:
"If the value cannot fit in ty2, the results are undefined."

This matches the C definitions.

The existing behavior pins to infinity or a max int value, but that may just
lead to more confusion as seen in:
http://llvm.org/bugs/show_bug.cgi?id=21130

Returning undef will hopefully lead to a less silent failure.

Differential Revision: http://reviews.llvm.org/D5603

llvm-svn: 219542
 		2014-10-10 23:00:21 +00:00
..
Analysis This patch teaches ScalarEvolution to pick and use !range metadata. 2014-10-10 21:22:34 +00:00
Assembler Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
Bindings Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
Bitcode Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
BugPoint Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
CodeGen R600/SI: Change how DS offsets are printed 2014-10-10 22:16:07 +00:00
DebugInfo [dwarfdump] Prettyprint DW_AT_APPLE_property_attribute bitfield values. 2014-10-10 15:51:10 +00:00
ExecutionEngine [mips] Remove XFAIL from two XPASS'ing tests on the llvm-mips-linux builder 2014-10-03 08:49:44 +00:00
Feature Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
FileCheck FileCheck: Add a flag to allow checking empty input 2014-08-07 18:40:37 +00:00
Instrumentation DebugInfo+DFSan: Ensure that debug info references to llvm::Functions remain pointing to the underlying function when wrappers are created 2014-10-07 22:59:46 +00:00
Integer
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JitListener Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
LTO LTO: Add missing target triple from r218784 2014-10-01 18:49:58 +00:00
Linker [dwarfdump] Print the name for referenced specification of abstract_origin DIEs. 2014-10-06 03:36:31 +00:00
MC [mips][microMIPS] Implement ADDIUSP instruction 2014-10-10 14:37:30 +00:00
Object llvm-ar: Start adding support for mri scripts. 2014-10-10 18:33:51 +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
Transforms Return undef on FP <-> Int conversions that overflow (PR21330). 2014-10-10 23:00:21 +00:00
Unit
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Verifier Verifier: Don't reject varargs callee cleanup functions 2014-08-29 21:25:28 +00:00
YAMLParser
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tools llvm-readobj: add test for r219228 2014-10-08 02:06:11 +00:00
.clang-format
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CMakeLists.txt Add LLVMgold target to test dependencies. 2014-09-10 22:20:49 +00:00
Makefile Delete support for AuroraUX. 2014-08-14 15:15:09 +00:00
Makefile.tests
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TestRunner.sh
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lit.cfg llvm/test/lit.cfg: Suppress dwarf stuff for targeting x86_64-mingw32 while investigating since r219108. 2014-10-06 23:29:06 +00:00
lit.site.cfg.in Add missing Interpreter intrinsic lowering for sin, cos and ceil 2014-08-08 15:00:12 +00:00