David Callahan c1c810de0b [AutoFDO] Fix handling of empty profiles ...

Summary:
If a profile has no samples for a function, then the function "entry count" is set to the value 0. Several places in the code test that if the Function::getEntryCount is defined at all. Here we change to treat a 0 entry count the same as undefined.

In particular, this fixes a problem in getLayoutSuccessorProbThreshold in MachineBlockPlacement.cpp where we use a different and inferior heuristic for laying out basic blocks.

Reviewers: danielcdh, dnovillo

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D23082

llvm-svn: 277849

2016-08-05 18:38:19 +00:00

..

Analysis

[SCEV] Don't infinitely recurse on unreachable code

2016-08-05 18:34:14 +00:00

AsmParser

LLLexer.cpp: Avoid using BitsToDouble() to preserve SNaN like "double 0x7FF4000000000000".

2016-08-05 11:59:49 +00:00

Bitcode

[ThinLTO] Address review comments from PGO indirect call promotion (NFC)

2016-07-18 18:31:50 +00:00

CodeGen

GlobalISel: clear pending phis after MachineFunction translated

2016-08-05 17:50:36 +00:00

DebugInfo

[CodeView] Use llvm::Error instead of std::error_code.

2016-08-04 19:39:55 +00:00

ExecutionEngine

[ExecutionEngine] Refactor - Roll JITSymbolFlags functionality into JITSymbol.h

2016-08-04 20:32:37 +00:00

Fuzzer

[libFuzzer] extend the messages printed by afl_driver

2016-07-19 23:18:28 +00:00

IR

[AutoFDO] Fix handling of empty profiles

2016-08-05 18:38:19 +00:00

IRReader

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LibDriver

Object: Replace NewArchiveIterator with a simpler NewArchiveMember class. NFCI.

2016-06-29 22:27:42 +00:00

LineEditor

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Linker

IR: New representation for CFI and virtual call optimization pass metadata.

2016-06-24 21:21:32 +00:00

LTO

Move legacy LTO interface headers to legacy/ directory.

2016-07-14 21:21:16 +00:00

MC

[mips] Set Personality and LSDA encoding for FreeBSD

2016-08-04 15:36:03 +00:00

Object

Add the first of what will be a long line of additional error checks for invalid Mach-O files.

2016-08-05 18:19:40 +00:00

ObjectYAML

BPF: Use official ELF e_machine value

2016-07-15 22:27:55 +00:00

Option

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Passes

[PM] Change the name of the repeating utility to something less

2016-08-04 03:52:53 +00:00

ProfileData

[PGO] Make needsComdatForCounter() available (NFC)

2016-07-21 20:50:02 +00:00

Support

Add unittests to {ARM | AArch64}TargetParser.

2016-07-28 06:11:18 +00:00

TableGen

[TableGen] Autobrief-ize Record. NFC.

2016-07-14 14:53:14 +00:00

Target

[X86][SSE] Add initial support for 2 input target shuffle combining.

2016-08-05 17:36:14 +00:00

Transforms

Do not assign new discriminator for all intrinsics.

2016-08-05 17:56:49 +00:00

CMakeLists.txt

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LLVMBuild.txt

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