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Piotr Sobczak 72e2960e52 [AMDGPU] Ignore non-SUnits edges 
Summary:
Ignore edges to non-SUnits (e.g. ExitSU) when checking
for low latency instructions.

When calling the function isLowLatencyInstruction(),
an ExitSU could be on the list of successors, not necessarily
a regular SU. In other places in the code there is a check
"Succ->NodeNum >= DAGSize" to prevent further processing of
ExitSU as "Succ->getInstr()" is NULL in such a case.
Also, 8 out of 9 cases of "SUnit *Succ = SuccDep.getSUnit())"
has the guard, so it is clearly an omission here.

Change-Id: Ica86f0327c7b2e6bcb56958e804ea6c71084663b

Reviewers: nhaehnle

Reviewed By: nhaehnle

Subscribers: MatzeB, arsenm, kzhuravl, jvesely, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye, javed.absar, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60864

llvm-svn: 358740
 		2019-04-19 06:19:14 +00:00
clang Fix overly-long line after r358731. 2019-04-19 02:46:50 +00:00
clang-tools-extra [CodeComplete] Remove obsolete isOutputBinary(). 2019-04-18 17:35:55 +00:00
compiler-rt [libFuzzer] revert part of r358726 committed by mistake (oops) 2019-04-19 01:40:16 +00:00
debuginfo-tests Set config.lit_tools_dir, which is needed by lit.llvm.initialize. 2018-11-06 21:54:27 +00:00
libclc travis: Add LLVM-8 build 2019-03-27 21:28:31 +00:00
libcxx [libc++] Make __debug_less::operator() constexpr 2019-04-19 00:52:54 +00:00
libcxxabi [libc++] Make sure we re-export some missing libc++abi symbols from libc++ 2019-04-18 17:18:15 +00:00
libunwind Add support for ARMv7-M architecture which uses the Thumb 2 ISA (unified syntax) 2019-04-18 06:35:42 +00:00
lld [llvm] Prevent duplicate files in debug line header in dwarf 5: another attempt 2019-04-19 02:26:56 +00:00
lldb [Python] Simplify the code. NFCI. 2019-04-18 23:24:54 +00:00
llgo IR: Support parsing numeric block ids, and emit them in textual output. 2019-03-22 18:27:13 +00:00
llvm [AMDGPU] Ignore non-SUnits edges 2019-04-19 06:19:14 +00:00
openmp Fixed memory leak reported in Bugzilla: 2019-04-17 10:44:28 +00:00
parallel-libs Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
polly Apply include-what-you-use #include removal suggestions. NFC. 2019-03-28 20:19:49 +00:00
pstl [pstl] Add a serial backend for the PSTL 2019-04-18 18:20:19 +00:00
.arcconfig Update monorepo .arcconfig with new project callsign. 2019-01-31 14:34:59 +00:00
.clang-format Add .clang-tidy and .clang-format files to the toplevel of the 2019-01-29 16:43:16 +00:00
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitignore Add a reduced copy of the llvm .gitignore 2019-04-09 00:52:49 +00:00
README.md
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README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.