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Changpeng Fang 5b648df1a8 AMDGPU: Reduce the number of expensive calls in SIFormMemoryClause 
Summary:
  RPTracker::reset(MI) is a very expensive call when the number of virtual registers is huge.
We observed a long compilation time issue when RPT::reset() is called once for each cluster.

In this work, we call RPT.reset() only at the first seen cluster, and use advance() to get
the register pressure for the later clusters in the same basic block. This could effectively reduce the number
of the expensive calls and thus reduce the compile time.

Reviewers:
  rampitec

Fixes:
  SWDEV-239161

Differential Revision:
  https://reviews.llvm.org/D95273
 		2021-01-25 16:08:08 -08:00
..
Analysis [InlineAdvisor] Allow replay of inline decisions for the CGSCC inliner from optimization remarks 2021-01-25 15:38:57 -08:00
AsmParser [X86] Add x86_amx type for intel AMX. 2020-12-30 13:52:13 +08:00
BinaryFormat [Debuginfo][DW_OP_implicit_pointer] (1/7) Support for DW_OP_LLVM_implicit_pointer 2021-01-15 14:45:04 +05:30
Bitcode [llvm] Use pop_back_val (NFC) 2021-01-24 12:18:57 -08:00
Bitstream [llvm] Use llvm::append_range (NFC) 2021-01-06 18:27:33 -08:00
CodeGen Recommit "[AArch64][GlobalISel] Implement widenScalar for signed overflow" 2021-01-25 16:57:20 -05:00
DWARFLinker [llvm] Use pop_back_val (NFC) 2021-01-24 12:18:57 -08:00
DebugInfo [llvm] Use pop_back_val (NFC) 2021-01-24 12:18:57 -08:00
Demangle [llvm] Remove redundant return and continue statements (NFC) 2021-01-14 20:30:34 -08:00
ExecutionEngine Revert "[JITLink] Enable exception handling for ELF." 2021-01-25 11:00:38 -05:00
Extensions llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
FileCheck [llvm] Use llvm::sort (NFC) 2021-01-17 10:39:45 -08:00
Frontend [OpenMPIRBuilder] Silence compiler warning. NFC. 2021-01-23 21:00:37 -06:00
FuzzMutate [FuzzMutate] Add mutator to modify instruction flags. 2021-01-23 19:05:20 +00:00
Fuzzer
…
IR Revert "[ObjC][ARC] Annotate calls with attributes instead of emitting retainRV" 2021-01-25 13:53:38 -08:00
IRReader static const char *const foo => const char foo[] 2020-12-01 10:33:18 -08:00
InterfaceStub [llvm-elfabi] Add flag to preserve timestamp when output is the same 2020-12-29 20:27:06 -08:00
LTO [LTO] Move DisableVerify setting to LTOCodeGenerator class (NFC). 2021-01-24 14:14:40 +00:00
LineEditor llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
Linker [llvm-link] Fix for an assertion when linking global with appending linkage 2021-01-23 00:10:42 -08:00
MC [llvm] Use isAlpha/isAlnum (NFC) 2021-01-22 23:25:03 -08:00
MCA [llvm] Use llvm::find (NFC) 2021-01-19 20:19:14 -08:00
Object [llvm] Use static_assert instead of assert (NFC) 2021-01-22 23:25:05 -08:00
ObjectYAML [ObjectYAML] - An attempt to fix BB after commit of D95140. 2021-01-25 13:26:06 +03:00
Option [llvm] Simplify string comparisons (NFC) 2021-01-11 18:48:09 -08:00
Passes [LoopRotate] Add PrepareForLTO stage, avoid rotating with inline cands. 2021-01-19 10:15:29 +00:00
ProfileData [llvm] Use isDigit (NFC) 2021-01-21 19:59:50 -08:00
Remarks llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
Support Support: Remove duplicated code in {File,clang::ModulesDependency}Collector, NFC 2021-01-25 15:09:00 -08:00
TableGen [llvm] Use pop_back_val (NFC) 2021-01-24 12:18:57 -08:00
Target AMDGPU: Reduce the number of expensive calls in SIFormMemoryClause 2021-01-25 16:08:08 -08:00
Testing [llvm][NFC] Remove unnecessary vector creation in Annotations 2020-11-14 15:55:09 +00:00
TextAPI [llvm] Use llvm::sort (NFC) 2021-01-17 10:39:45 -08:00
ToolDrivers llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
Transforms [InlineAdvisor] Allow replay of inline decisions for the CGSCC inliner from optimization remarks 2021-01-25 15:38:57 -08:00
WindowsManifest llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
XRay [lib/Object, tools] - Make ELFObjectFile::getELFFile return reference. 2020-12-04 16:02:29 +03:00
CMakeLists.txt llvmbuildectomy - support disabled native target 2020-11-13 15:50:13 +01:00