Bill Schmidt 41454cc88b [PowerPC] Avoid VSX FMA mutate when killed product reg = addend reg ... With VSX enabled, test/CodeGen/PowerPC/recipest.ll exposes a bug in the FMA mutation pass. If we have a situation where a killed product register is the same register as the FMA target, such as: %vreg5<def,tied1> = XSNMSUBADP %vreg5<tied0>, %vreg11, %vreg5, %RM<imp-use>; VSFRC:%vreg5 F8RC:%vreg11 then the substitution makes no sense. We end up getting a crash when we try to extend the interval associated with the killed product register, as there is already a live range for %vreg5 there. This patch just disables the mutation under those circumstances. Since recipest.ll generates different code with VMX enabled, I've modified that test to use -mattr=-vsx. I've borrowed the code from that test that exposed the bug and placed it in fma-mutate.ll, where it tests several mutation opportunities including the "bad" one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220290 91177308-0d34-0410-b5e6-96231b3b80d8		2014-10-21 13:02:37 +00:00
..
Analysis	Teach the load analysis to allow finding available values which require	2014-10-21 09:00:40 +00:00
AsmParser	Make CallingConv::ID an alias of "unsigned".	2014-09-10 18:00:17 +00:00
Bitcode	correct const-ness with auto and dyn_cast	2014-10-15 17:45:13 +00:00
CodeGen	Fix a bit of confusion about .set and produce more readable assembly.	2014-10-21 01:17:30 +00:00
DebugInfo	Constify input argument of RelocVisitor and DWARFContext constructors. NFC.	2014-10-20 20:28:51 +00:00
ExecutionEngine	[MCJIT] Temporarily revert r220245 - it broke several bots.	2014-10-21 00:24:02 +00:00
IR	Teach the load analysis to allow finding available values which require	2014-10-21 09:00:40 +00:00
IRReader	Pass a && to getLazyBitcodeModule.	2014-09-03 17:31:46 +00:00
LineEditor
Linker	Merge alignment of common GlobalValue.	2014-09-09 17:48:18 +00:00
LTO	LTO: Document the Boolean argument from r218784	2014-10-02 21:11:04 +00:00
MC	Fix a bit of confusion about .set and produce more readable assembly.	2014-10-21 01:17:30 +00:00
Object	[MCJIT] Temporarily revert r220245 - it broke several bots.	2014-10-21 00:24:02 +00:00
Option	Add an overload of getLastArgNoClaim taking two OptSpecifiers.	2014-09-12 19:42:53 +00:00
ProfileData	Reduce double set lookups. NFC.	2014-10-10 15:32:50 +00:00
Support	PR21202: Memory leak in Windows RWMutexImpl when using SRWLOCK	2014-10-21 00:34:39 +00:00
TableGen	Eliminate some deep std::vector copies. NFC.	2014-10-03 18:33:16 +00:00
Target	[PowerPC] Avoid VSX FMA mutate when killed product reg = addend reg	2014-10-21 13:02:37 +00:00
Transforms	Teach the load analysis to allow finding available values which require	2014-10-21 09:00:40 +00:00
CMakeLists.txt
LLVMBuild.txt
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