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2fddd75212
llvm-mirror/test
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Andrea Di Biagio 2fddd75212 Fix for PR23103. Correctly propagate the 'IsUndef' flag to the register operands of a commuted instruction. 
Revision 220239 exposed a latent bug in method
'TargetInstrInfo::commuteInstruction'. When commuting the operands of a machine
instruction, method 'commuteInstruction' didn't correctly propagate the
'IsUndef' flag to the register operands of the new (commuted) instruction.

Before this patch, the following instruction:
  %vreg4<def> = VADDSDrr  %vreg14, %vreg5<undef>; FR64:%vreg4,%vreg14,%vreg5

was wrongly converted by method 'commuteInstruction' into:
  %vreg4<def> = VADDSDrr  %vreg5, %vreg14<undef>; FR64:%vreg4,%vreg5,%vreg14

The correct instruction should have been:
  %vreg4<def> = VADDSDrr  %vreg5<undef>, %vreg14; FR64:%vreg4,%vreg5,%vreg14

This patch fixes the problem in method 'TargetInstrInfo::commuteInstruction'.
When swapping the operands of a machine instruction, we now make sure that
'IsUndef' flags are correctly set.
Added test case 'pr23103.ll'.

Differential Revision: http://reviews.llvm.org/D9406

llvm-svn: 236258
2015-04-30 21:03:29 +00:00
..
Analysis [getUnderlyingOjbects] Analyze loop PHIs further to remove false positives 2015-04-23 20:09:20 +00:00
Assembler IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
Bindings IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
Bitcode Don't overflow GCTable 2015-04-30 04:09:41 +00:00
BugPoint IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
CodeGen Fix for PR23103. Correctly propagate the 'IsUndef' flag to the register operands of a commuted instruction. 2015-04-30 21:03:29 +00:00
DebugInfo IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
ExecutionEngine [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
Feature [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
FileCheck
Instrumentation IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
Integer [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
JitListener IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
Linker IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
LTO Revert changes to LTO test case since llvm-lto can't handle textual IR inputs 2015-04-24 18:13:27 +00:00
MC AArch64: add BFC alias for the BFI/BFM instructions. 2015-04-30 18:28:58 +00:00
Object Support arm32 R_ARM_V4BX relocation format 2015-04-22 15:26:43 +00:00
Other [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
SymbolRewriter
TableGen Add support for v1i128 type. 2015-04-17 16:11:05 +00:00
tools For llvm-objdump, with the -archive-headers and -macho options, use the -non-verbose 2015-04-30 20:30:42 +00:00
Transforms [InstCombine] Add new rule for MIN(MAX(~A, ~B), ~C) et. al. 2015-04-30 04:56:04 +00:00
Unit
Verifier IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
YAMLParser
.clang-format
CMakeLists.txt
lit.cfg
lit.site.cfg.in
Makefile
Makefile.tests
TestRunner.sh