Chandler Carruth 1c49fda408 Fix a miscompile in the DAG combiner. Previously, we would incorrectly ... try to reduce the width of this load, and would end up transforming: (truncate (lshr (sextload i48 <ptr> as i64), 32) to i32) to (truncate (zextload i32 <ptr+4> as i64) to i32) We lost the sext attached to the load while building the narrower i32 load, and replaced it with a zext because lshr always zext's the results. Instead, bail out of this combine when there is a conflict between a sextload and a zext narrowing. The rest of the DAG combiner still optimize the code down to the proper single instruction: movswl 6(...),%eax Which is exactly what we wanted. Previously we read past the end *and* missed the sign extension: movl 6(...), %eax git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169802 91177308-0d34-0410-b5e6-96231b3b80d8		2012-12-11 00:36:57 +00:00
..
Analysis	Optimistically analyse Phi cycles	2012-12-10 23:02:41 +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	Fix a miscompile in the DAG combiner. Previously, we would incorrectly	2012-12-11 00:36:57 +00:00
DebugInfo	Refactor out the abbreviation handling into a separate class that	2012-12-10 23:34:43 +00:00
ExecutionEngine	llvm/test/ExecutionEngine/MCJIT/lit.local.cfg: ppc32-elf is not ready.	2012-11-20 10:49:01 +00:00
Feature	Remove the dependent libraries feature.	2012-11-27 09:55:56 +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] Do not store origin for clean values.	2012-12-06 11:41:03 +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	Remove the dependent libraries feature.	2012-11-27 09:55:56 +00:00
MC	Add a test for explicitly exercising the mc-relax-all flag.	2012-12-10 20:36:01 +00:00
Object	numerically sort the symbols, so that the testcase result is uniform	2012-11-13 21:01:11 +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
tools	PR10867: Analogue of r169441 for when using external 'sh'. And actually run the test!	2012-12-05 23:15:33 +00:00
Transforms	Add support for reverse induction variables. For example:	2012-12-10 19:25:06 +00:00
Unit
Verifier
YAMLParser
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