Commit Graph

7 Commits

Author SHA1 Message Date
Mircea Trofin 7d541eb4d4 [inliner] Mandatory inlining decisions produce remarks
This also removes the need to disable the mandatory inlining phase in
tests.

In a departure from the previous remark, we don't output a 'cost' in
this case, because there's no such thing. We just report that inlining
happened because of the attribute.

Differential Revision: https://reviews.llvm.org/D110891
2021-10-05 14:01:25 -07:00
Fangrui Song 76093b1739 [InlineAdvisor] Add single quotes around caller/callee names
Clang diagnostics refer to identifier names in quotes.
This patch makes inline remarks conform to the convention.
New behavior:

```
% clang -O2 -Rpass=inline -Rpass-missed=inline -S a.c
a.c:4:25: remark: 'foo' inlined into 'bar' with (cost=-30, threshold=337) at callsite bar:0:25; [-Rpass=inline]
int bar(int a) { return foo(a); }
                        ^
```

Reviewed By: hoy

Differential Revision: https://reviews.llvm.org/D107791
2021-08-10 11:51:31 -07:00
Mircea Trofin e8049dc3c8 [NewPM][Inliner] Move the 'always inliner' case in the same CGSCC pass as 'regular' inliner
Expanding from D94808 - we ensure the same InlineAdvisor is used by both
InlinerPass instances. The notion of mandatory inlining is moved into
the core InlineAdvisor: advisors anyway have to handle that case, so
this change also factors out that a bit better.

Differential Revision: https://reviews.llvm.org/D94825
2021-01-15 17:59:38 -08:00
modimo 2a49b7c64a [Inliner] Change inline remark format and update ReplayInlineAdvisor to use it
This change modifies the source location formatting from:
LineNumber.Discriminator
to:
LineNumber:ColumnNumber.Discriminator

The motivation here is to enhance location information for inline replay that currently exists for the SampleProfile inliner. This will be leveraged further in inline replay for the CGSCC inliner in the related diff.

The ReplayInlineAdvisor is also modified to read the new format and now takes into account the callee for greater accuracy.

Testing:
ninja check-llvm

Reviewed By: mtrofin

Differential Revision: https://reviews.llvm.org/D94333
2021-01-12 13:43:48 -08:00
Mircea Trofin 5fe10263ab [llvm][inliner] Reuse the inliner pass to implement 'always inliner'
Enable performing mandatory inlinings upfront, by reusing the same logic
as the full inliner, instead of the AlwaysInliner. This has the
following benefits:
- reduce code duplication - one inliner codebase
- open the opportunity to help the full inliner by performing additional
function passes after the mandatory inlinings, but before th full
inliner. Performing the mandatory inlinings first simplifies the problem
the full inliner needs to solve: less call sites, more contextualization, and,
depending on the additional function optimization passes run between the
2 inliners, higher accuracy of cost models / decision policies.

Note that this patch does not yet enable much in terms of post-always
inline function optimization.

Differential Revision: https://reviews.llvm.org/D91567
2020-11-30 12:03:39 -08:00
Wenlei He 7c8a6936bf [Remarks] Add callsite locations to inline remarks
Summary:
Add call site location info into inline remarks so we can differentiate inline sites.
This can be useful for inliner tuning. We can also reconstruct full hierarchical inline
tree from parsing such remarks. The messege of inline remark is also tweaked so we can
differentiate SampleProfileLoader inline from CGSCC inline.

Reviewers: wmi, davidxl, hoy

Subscribers: hiraditya, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D82213
2020-06-20 23:32:10 -07:00
Leonard Chan e6d2c8dde6 [clang][NewPM] Fixing remaining -O0 tests that are broken under new PM
- CodeGen/flatten.c will fail under new PM becausec the new PM AlwaysInliner
  seems to intentionally inline functions but not call sites marked with
  alwaysinline (D23299)
- Tests that check remarks happen to check them for the inliner which is not
  turned on at O0. These tests just check that remarks work, but we can make
  separate tests for the new PM with -O1 so we can turn on the inliner and
  check the remarks with minimal changes.

Differential Revision: https://reviews.llvm.org/D62225

llvm-svn: 363846
2019-06-19 17:41:30 +00:00