llvm/lib
Tim Northover acd79ce0ad ARM: correct liveness flags during ARMLoadStoreOpt
When we had a sequence like:

    s1 = VLDRS [r0, 1], Q0<imp-def>
    s3 = VLDRS [r0, 2], Q0<imp-use,kill>, Q0<imp-def>
    s0 = VLDRS [r0, 0], Q0<imp-use,kill>, Q0<imp-def>
    s2 = VLDRS [r0, 4], Q0<imp-use,kill>, Q0<imp-def>

we were gathering the {s0, s1} loads below the s3 load. This is fine,
but confused the verifier since now the s3 load had Q0<imp-use> with
no definition above it.

This should mark such uses <undef> as well. The liveness structure at
the beginning and end of the block is unaffected, and the true sN
definitions should prevent any dodgy reorderings being introduced
elsewhere.

rdar://problem/15124449

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192344 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-10 09:28:20 +00:00
..
Analysis Rename DataLayout variables TD -> DL 2013-10-03 19:50:01 +00:00
AsmParser Add a GlobalAlias::isValidLinkage to reduce code duplication. 2013-10-09 16:07:32 +00:00
Bitcode AutoUpgrade: upgrade from scalar TBAA format to struct-path aware TBAA format. 2013-09-28 00:22:27 +00:00
CodeGen Debug Info: In DIBuilder, the context and type fields of template_type and 2013-10-09 19:46:28 +00:00
DebugInfo [DebugInfo] Further simplify DWARFDebugAranges public interface 2013-10-02 07:12:47 +00:00
ExecutionEngine Remove dead code. 2013-10-07 13:54:50 +00:00
IR Debug Info: In DIBuilder, the context and type fields of template_type and 2013-10-09 19:46:28 +00:00
IRReader Add 'const' qualifiers to static const char* variables. 2013-07-16 01:17:10 +00:00
Linker Implement function prefix data as an IR feature. 2013-09-16 01:08:15 +00:00
LTO Add a MCTargetStreamer interface. 2013-10-08 13:08:17 +00:00
MC Add a MCTargetStreamer interface. 2013-10-08 13:08:17 +00:00
Object Object/COFF: Rename getXXX{Begin,End} -> xxx_{begin,end}. 2013-09-27 21:47:05 +00:00
Option Fix another mistake in r190442. 2013-09-10 23:22:56 +00:00
Support Fix build on Solaris 11. 2013-10-08 16:12:58 +00:00
TableGen Add an error check for a typo I accidentally made in a td file that caused an assert to fire. 2013-08-20 04:22:09 +00:00
Target ARM: correct liveness flags during ARMLoadStoreOpt 2013-10-10 09:28:20 +00:00
Transforms Fix a bug in Dead Argument Elimination. 2013-10-09 17:21:44 +00:00
CMakeLists.txt Move LTO support library to a component, allowing it to be tested 2013-09-24 23:52:22 +00:00
LLVMBuild.txt Move LTO support library to a component, allowing it to be tested 2013-09-24 23:52:22 +00:00
Makefile Move LTO support library to a component, allowing it to be tested 2013-09-24 23:52:22 +00:00