Ulrich Weigand 1ef2cec146 Fix ppcf128 component access on little-endian systems ... The PowerPC 128-bit long double data type (ppcf128 in LLVM) is in fact a pair of two doubles, where one is considered the "high" or more-significant part, and the other is considered the "low" or less-significant part. When a ppcf128 value is stored in memory or a register pair, the high part always comes first, i.e. at the lower memory address or in the lower-numbered register, and the low part always comes second. This is true both on big-endian and little-endian PowerPC systems. (Similar to how with a complex number, the real part always comes first and the imaginary part second, no matter the byte order of the system.) This was implemented incorrectly for little-endian systems in LLVM. This commit fixes three related issues: - When printing an immediate ppcf128 constant to assembler output in emitGlobalConstantFP, emit the high part first on both big- and little-endian systems. - When lowering a ppcf128 type to a pair of f64 types in SelectionDAG (which is used e.g. when generating code to load an argument into a register pair), use correct low/high part ordering on little-endian systems. - In a related issue, because lowering ppcf128 into a pair of f64 must operate differently from lowering an int128 into a pair of i64, bitcasts between ppcf128 and int128 must not be optimized away by the DAG combiner on little-endian systems, but must effect a word-swap. Reviewed by Hal Finkel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212274 91177308-0d34-0410-b5e6-96231b3b80d8		2014-07-03 15:06:47 +00:00
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Analysis
Assembler	IR: Add COMDATs to the IR	2014-06-27 18:19:56 +00:00
Bindings
Bitcode	Add some test files for r211710.	2014-06-25 15:41:39 +00:00
BugPoint
CodeGen	Fix ppcf128 component access on little-endian systems	2014-07-03 15:06:47 +00:00
DebugInfo	DebugInfo: Ensure that all debug location scope chains from instructions within a function, lead to the function itself.	2014-07-02 18:32:05 +00:00
ExecutionEngine	Fix this test to not write to the source tree, and instead to write to	2014-06-28 05:18:49 +00:00
Feature	IR: Add COMDATs to the IR	2014-06-27 18:19:56 +00:00
FileCheck
Instrumentation	[msan] Stop propagating shadow in blacklisted functions.	2014-07-03 11:56:30 +00:00
Integer
JitListener
Linker	IR: Add COMDATs to the IR	2014-06-27 18:19:56 +00:00
LTO
MC	[X86] AVX512: Add writemask variants for vperm*2*	2014-07-02 21:25:54 +00:00
Object	Add the -reverse-sort flag (aka -r) to llvm-nm	2014-07-02 23:23:58 +00:00
Other
TableGen
tools	llvm-cov: Support specifying multiple source files	2014-06-27 20:41:25 +00:00
Transforms	Add new lines to debugging information.	2014-07-03 02:11:49 +00:00
Unit
Verifier	IR: Add COMDATs to the IR	2014-06-27 18:19:56 +00:00
YAMLParser
.clang-format
CMakeLists.txt
lit.cfg
lit.site.cfg.in
Makefile
Makefile.tests
TestRunner.sh