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ba75b68ecc
llvm-mirror/lib
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Craig Topper ba75b68ecc [X86] Remove dead code from X86ISelDAGToDAG.cpp multiply handling 
Summary:
Lowering never creates X86ISD::UMUL for 8-bit types. X86ISD::UMUL8 is used instead. If X86ISD::UMUL 8-bit were ever used it would crash.

DAGCombiner replaces UMUL_LOHI/SMUL_LOHI with a wider MUL and a shift if the type twice as wide is legal. So we should never see i8 UMUL_LOHI/SMUL_LOHI. In fact I think there was a bug in part of the i8 code. Similar is true for i16 though without the bug.

Reviewers: RKSimon, spatel, zvi

Reviewed By: zvi

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D38276

llvm-svn: 314430
2017-09-28 16:56:36 +00:00
..
Analysis [LVI] Move LVILatticeVal class to separate header file (NFC). 2017-09-28 11:09:22 +00:00
AsmParser IR: Represent -ggnu-pubnames with a flag on the DICompileUnit. 2017-09-12 21:50:41 +00:00
BinaryFormat [BinaryFormat] Fix out of bounds read. 2017-08-31 12:50:42 +00:00
Bitcode [llvm] Fix some typos. NFC. 2017-09-15 20:01:43 +00:00
CodeGen [DebugInfo] Do not extend range for physreg in LiveDebugVariables 2017-09-28 13:10:06 +00:00
DebugInfo [dwarfdump] Verify that CUs have a unit DIE. 2017-09-28 15:57:50 +00:00
Demangle
ExecutionEngine Revert "Revert "ExecutionEngine: add R_AARCH64_ABS{16,32}"" 2017-09-20 21:32:44 +00:00
Fuzzer Moving libFuzzer from LLVM to compiler-rt. 2017-08-21 23:25:12 +00:00
FuzzMutate Move some CLI utils out of llvm-isel-fuzzer and into the library 2017-09-02 23:43:04 +00:00
IR [X86] Finishing broadcastf32x2 and broadcasti32x2 intrinsics lowering to IR. llvm side. 2017-09-26 07:39:39 +00:00
IRReader
LineEditor
Linker
LTO [Support] Rename tool_output_file to ToolOutputFile, NFC 2017-09-23 01:03:17 +00:00
MC Typo: const MCSchedModel SchedModel -> const MCSchedModel &SchedModel 2017-09-27 12:48:48 +00:00
Object [WebAssembly] Model weakly defined symbols as wasm exports 2017-09-26 21:10:09 +00:00
ObjectYAML Reland "[WebAssembly] Add support for naming wasm data segments" 2017-09-20 19:03:35 +00:00
Option Revert "Revert r311552: [Bash-autocompletion] Add support for static analyzer flags" 2017-08-29 00:09:31 +00:00
Passes [DivRempairs] add a pass to optimize div/rem pairs (PR31028) 2017-09-09 13:38:18 +00:00
ProfileData [llvm-cov] Improve error messaging for function mismatches 2017-09-21 01:11:30 +00:00
Support Fix a UBsan bot. 2017-09-28 00:27:39 +00:00
TableGen [Support] Rename tool_output_file to ToolOutputFile, NFC 2017-09-23 01:03:17 +00:00
Target [X86] Remove dead code from X86ISelDAGToDAG.cpp multiply handling 2017-09-28 16:56:36 +00:00
Testing
ToolDrivers Convert the archive writer to use Error. 2017-09-21 23:13:36 +00:00
Transforms [LoopUnroll] Fix use after poison. 2017-09-28 14:47:39 +00:00
WindowsManifest Fix bug 34608 by moving private header out of public header. 2017-09-14 23:01:13 +00:00
XRay [XRay] initialize all members of YAMLXRayRecord for -Wmissing-field-initializers 2017-09-27 07:30:48 +00:00
CMakeLists.txt Moving libFuzzer from LLVM to compiler-rt. 2017-08-21 23:25:12 +00:00
LLVMBuild.txt Re-apply "Introduce FuzzMutate library" 2017-08-21 22:57:06 +00:00