llvm-project

Commit Graph

Author	SHA1	Message	Date
Simon Pilgrim	6f630e4618	Fix line-endings. NFCI. llvm-svn: 342639	2018-09-20 10:59:08 +00:00
Simon Pilgrim	2d0f20cc04	[X86] Handle COPYs of physregs better (regalloc hints) Enable enableMultipleCopyHints() on X86. Original Patch by @jonpa: While enabling the mischeduler for SystemZ, it was discovered that for some reason a test needed one extra seemingly needless COPY (test/CodeGen/SystemZ/call-03.ll). The handling for that is resulted in this patch, which improves the register coalescing by providing not just one copy hint, but a sorted list of copy hints. On SystemZ, this gives ~12500 less register moves on SPEC, as well as marginally less spilling. Instead of improving just the SystemZ backend, the improvement has been implemented in common-code (calculateSpillWeightAndHint(). This gives a lot of test failures, but since this should be a general improvement I hope that the involved targets will help and review the test updates. Differential Revision: https://reviews.llvm.org/D38128 llvm-svn: 342578	2018-09-19 18:59:08 +00:00
Alexander Ivchenko	46e07e3623	[GlobalIsel][X86] Support G_PTRTOINT instruction. Add legalization/selection for x86/x86_64 and corresponding tests. Reviewed By: igorb Differential Revision: https://reviews.llvm.org/D43617 llvm-svn: 326311	2018-02-28 09:18:47 +00:00

Author

SHA1

Message

Date

Simon Pilgrim

6f630e4618

Fix line-endings. NFCI.

llvm-svn: 342639

2018-09-20 10:59:08 +00:00

Simon Pilgrim

2d0f20cc04

[X86] Handle COPYs of physregs better (regalloc hints)

Enable enableMultipleCopyHints() on X86.

Original Patch by @jonpa:

While enabling the mischeduler for SystemZ, it was discovered that for some reason a test needed one extra seemingly needless COPY (test/CodeGen/SystemZ/call-03.ll). The handling for that is resulted in this patch, which improves the register coalescing by providing not just one copy hint, but a sorted list of copy hints. On SystemZ, this gives ~12500 less register moves on SPEC, as well as marginally less spilling.

Instead of improving just the SystemZ backend, the improvement has been implemented in common-code (calculateSpillWeightAndHint(). This gives a lot of test failures, but since this should be a general improvement I hope that the involved targets will help and review the test updates.

Differential Revision: https://reviews.llvm.org/D38128

llvm-svn: 342578

2018-09-19 18:59:08 +00:00

Alexander Ivchenko

46e07e3623

[GlobalIsel][X86] Support G_PTRTOINT instruction.

Add legalization/selection for x86/x86_64 and
corresponding tests.

Reviewed By: igorb

Differential Revision: https://reviews.llvm.org/D43617

llvm-svn: 326311

2018-02-28 09:18:47 +00:00

3 Commits