llvm-6502/test
Quentin Colombet 8e2e5ff024 [ARM] Improve the instruction selection of vector loads.
In the ARM back-end, build_vector nodes are lowered to a target specific
build_vector that uses floating point type. 
This works well, unless the inserted bitcasts survive until instruction
selection. In that case, they incur moves between integer unit and floating
point unit that may result in inefficient code.

In other words, this conversion may introduce artificial dependencies when the
code leading to the build vector cannot be completed with a floating point type.

In particular, this happens when loads are not aligned.

Before this patch, in that case, the compiler generates general purpose loads
and creates the floating point vector from them, instead of directly using the
vector unit.

The patch uses a vector friendly sequence of code when the inserted bitcasts to
floating point survived DAGCombine.

This is done by a target specific DAGCombine that changes the target specific
build_vector into a sequence of insert_vector_elt that get rid of the bitcasts.

<rdar://problem/14170854>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185587 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-03 21:42:57 +00:00
..
Analysis Minimize precision loss when computing cyclic probabilities. 2013-06-28 22:40:43 +00:00
Archive Fix an ordering problem in the test. 2013-06-21 07:23:14 +00:00
Assembler Fix test: It was missing run lines and llvm-dis has no -disable-verify option. 2013-07-03 16:27:55 +00:00
Bindings/Ocaml
Bitcode
BugPoint
CodeGen [ARM] Improve the instruction selection of vector loads. 2013-07-03 21:42:57 +00:00
DebugInfo Trying to fix the bots 2013-07-03 00:16:11 +00:00
ExecutionEngine Enable mcjit tests on ppc64 when building with cmake. 2013-06-03 19:17:21 +00:00
Feature Add a new function attribute 'cold' to functions. 2013-05-24 12:26:52 +00:00
FileCheck Prefix failing commands with not to make clear they are expected to fail. 2013-07-03 16:41:29 +00:00
Instrumentation [msan] Unpoison stack allocations and undef values in blacklisted functions. 2013-07-03 14:39:14 +00:00
Integer Rewrite test/Integer tests to use FileCheck instead of grep 2013-04-08 20:18:15 +00:00
JitListener
Linker Extend RemapInstruction and friends to take an optional new parameter, a ValueMaterializer. 2013-05-28 15:17:05 +00:00
MC ARM: Prevent ARMAsmParser::shouldOmitCCOutOperand() from misidentifying certain Thumb2 add immediate T3 encodings. 2013-07-03 20:38:01 +00:00
Object Add support for gnu archives with a string table and no symtab. 2013-07-03 15:57:14 +00:00
Other (1) Add ".test" to test/Other/lit.local.cfg, so llvm-cov.test is actually run. 2013-07-01 18:58:53 +00:00
TableGen
tools readobj: Dump PE/COFF optional records. 2013-06-12 19:10:33 +00:00
Transforms Change the gettimeofday test to only test on a posix platform. 2013-07-03 04:15:22 +00:00
Unit Propagate path to ASan/MSan symbolizer into test environment to produce useful reports on errors. 2013-04-04 07:41:00 +00:00
Verifier Also verify llvm.compiler_used. 2013-04-22 15:16:51 +00:00
YAMLParser
CMakeLists.txt Add obj2yaml to test dependencies 2013-04-05 07:26:37 +00:00
lit.cfg Suppress llvm/test/Other/can-execute.txt on msys bash. 2013-06-26 10:56:44 +00:00
lit.site.cfg.in Allow host triple to be correctly overridden in CMake builds 2013-05-04 07:36:23 +00:00
Makefile add polly to check-all 2013-05-20 18:49:15 +00:00
Makefile.tests Remove obsolete object file dumpers 2013-04-12 04:07:13 +00:00
TestRunner.sh