Bill Schmidt 89e88e30bf This patch addresses an incorrect transformation in the DAG combiner. ... The included test case is derived from one of the GCC compatibility tests. The problem arises after the selection DAG has been converted to type-legalized form. The combiner first sees a 64-bit load that can be converted into a pre-increment form. The original load feeds into a SRL that isolates the upper 32 bits of the loaded doubleword. This looks like an opportunity for DAGCombiner::ReduceLoadWidth() to replace the 64-bit load with a 32-bit load. However, this transformation is not valid, as the replacement load is not a pre-increment load. The pre-increment load produces an extra result, which feeds a subsequent add instruction. The replacement load only has one result value, and this value is propagated to all uses of the pre- increment load, including the add. Because the add is looking for the second result value as its operand, it ends up attempting to add a constant to a token chain, resulting in a crash. So the patch simply disables this transformation for any load with more than two result values. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172480 91177308-0d34-0410-b5e6-96231b3b80d8		2013-01-14 22:04:38 +00:00
..
Analysis	Make opt grab the triple from the module and use it to initialize the target machine.	2013-01-01 08:00:32 +00:00
Archive
Assembler	Fast-math test case for bitcode and textual reading/writing	2012-11-27 00:45:08 +00:00
Bindings/Ocaml	Move TargetData to DataLayout.	2012-10-08 16:39:34 +00:00
Bitcode	Change encoding of instruction operands in bitcode binaries to be relative	2012-10-11 20:20:40 +00:00
BugPoint	Fix unexpected passes. These test do work with LTO on linux. I tested both	2012-10-26 02:19:02 +00:00
CodeGen	This patch addresses an incorrect transformation in the DAG combiner.	2013-01-14 22:04:38 +00:00
DebugInfo	Add the C testcase to this file.	2013-01-08 03:03:14 +00:00
ExecutionEngine	llvm/test/ExecutionEngine/MCJIT/lit.local.cfg: ppc32-elf is not ready.	2012-11-20 10:49:01 +00:00
Feature	There was a switch fall-through in the parser for textual LLVM that caused	2013-01-07 13:32:38 +00:00
FileCheck	Fix a bug in FileCheck that wouldn't let define variables as follows:	2012-12-02 16:02:41 +00:00
Instrumentation	[msan] Change va_start/va_copy shadow memset alignment to 8.	2013-01-10 22:36:33 +00:00
Integer	Remove the dependent libraries feature.	2012-11-27 09:55:56 +00:00
JitListener	Use the 'count' attribute to calculate the upper bound of an array.	2012-12-04 21:34:03 +00:00
Linker	Fix a copy/paste error in the IR Linker, casting an ArrayType instead of a VectorType.	2013-01-10 10:49:36 +00:00
MC	This patch tackles the problem of parsing Mips	2013-01-12 01:03:14 +00:00
Object	[llvm-objdump] Emit addresses with the correct number of leading 0's.	2013-01-10 22:40:50 +00:00
Other	Using "not grep" is brittle as the test passes if llvm-as fails.	2012-11-21 14:17:23 +00:00
Scripts	Added program header emission	2012-11-16 20:51:32 +00:00
TableGen	Fix typo, which prevent test from being check.	2012-12-12 21:10:56 +00:00
tools	PR10867: Analogue of r169441 for when using external 'sh'. And actually run the test!	2012-12-05 23:15:33 +00:00
Transforms	SCEVExpander fix. RAUW needs to update the InsertedExpressions cache.	2013-01-14 21:00:37 +00:00
Unit
Verifier
YAMLParser	Convert the uses of '|&' to use '2>&1 |' instead, which works on old	2012-07-02 18:37:59 +00:00
CMakeLists.txt	Adding tests for the Intel JIT event listener's MCJIT support.	2012-11-21 20:38:26 +00:00
lit.cfg	Adding tests for the Intel JIT event listener's MCJIT support.	2012-11-21 20:38:26 +00:00
lit.site.cfg.in	Adding tests for the Intel JIT event listener's MCJIT support.	2012-11-21 20:38:26 +00:00
Makefile	Drop the address space limit for tests in the makefile build.	2012-12-09 10:34:22 +00:00
Makefile.tests
TestRunner.sh