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llvm-project/llvm/test/CodeGen
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Matthias Braun 152e7c8b12 VirtRegMap: Replace some identity copies with KILL instructions. 
An identity COPY like this:
   %AL = COPY %AL, %EAX<imp-def>
has no semantic effect, but encodes liveness information: Further users
of %EAX only depend on this instruction even though it does not define
the full register.

Replace the COPY with a KILL instruction in those cases to maintain this
liveness information. (This reverts a small part of r238588 but this
time adds a comment explaining why a KILL instruction is useful).

llvm-svn: 274952
 		2016-07-09 00:19:07 +00:00
..
AArch64 VirtRegMap: Replace some identity copies with KILL instructions. 2016-07-09 00:19:07 +00:00
AMDGPU Reapply r274829 with fix for FP vectors 2016-07-08 21:25:33 +00:00
ARM Do not expand SDIV when compiling for minimum code size 2016-07-08 15:32:01 +00:00
BPF [BPF] Remove exit-on-error from tests (PR27768, PR27769) 2016-05-30 08:28:34 +00:00
Generic Move CodeGen test from Generic to X86 specific directory 2016-06-10 19:14:01 +00:00
Hexagon [Hexagon] Equally-sized vectors are equivalent in ISel (except vNi1) 2016-06-27 15:08:22 +00:00
Inputs [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
Lanai [lanai] Use peephole optimizer to generate more conditional ALU operations. 2016-07-07 23:36:04 +00:00
MIR [lanai] Update test to use peephole-opt and not peephole-opts 2016-07-08 22:28:29 +00:00
MSP430
…
Mips [mips][micromips] Implement LD, LLD, LWU, SD, DSRL, DSRL32 and DSRLV instructions 2016-06-27 08:23:28 +00:00
NVPTX NVPTX: Remove the legacy ptx intrinsics 2016-07-07 16:40:17 +00:00
PowerPC VirtRegMap: Replace some identity copies with KILL instructions. 2016-07-09 00:19:07 +00:00
SPARC VirtRegMap: Replace some identity copies with KILL instructions. 2016-07-09 00:19:07 +00:00
SystemZ [SystemZ] Remove AND mask of bottom 6 bits when result is used for shift/rotate 2016-07-06 18:13:11 +00:00
Thumb [Thumb] Reapply r272251 with a fix for PR28348 (mk 2) 2016-07-05 12:37:13 +00:00
Thumb2 [Thumb] Reapply r272251 with a fix for PR28348 (mk 2) 2016-07-05 12:37:13 +00:00
WebAssembly [WebAssembly] Emit type signatures for declared functions 2016-06-03 18:34:36 +00:00
WinEH revert http://reviews.llvm.org/D21101 2016-06-30 17:52:24 +00:00
X86 VirtRegMap: Replace some identity copies with KILL instructions. 2016-07-09 00:19:07 +00:00
XCore IR: Introduce Module::global_objects(). 2016-06-22 20:29:42 +00:00