Using TargetTransformInfo allows the splitting pass to factor in the
code size cost of instructions as it decides whether or not outlining is
profitable.
This did not regress the overall amount of outlining seen on the handful
of internal frameworks I tested.
Thanks to Jun Bum Lim for suggesting this!
Differential Revision: https://reviews.llvm.org/D53835
llvm-svn: 346108
-static relies on lld's behavior, but -Bstatic/dynamic is supported
across all linkers.
Differential Revision: https://reviews.llvm.org/D54082
llvm-svn: 346107
Summary: This also enables some constant folding from KnownBits propagation. This helps on some cases vXi64 case in 32-bit mode where constant vectors appear as vXi32 and a bitcast. This can prevent getNode from constant folding sra/shl/srl.
Reviewers: RKSimon, spatel
Reviewed By: spatel
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D54069
llvm-svn: 346102
Summary:
There are 2 changes here:
1. Use system sed instead of the sed found in the user's path. This
fixes this script in the case the user has gnu-sed in their $PATH before
bsd sed since `-i ''` isn't compatible and you need `-i` instead.
2. `set -e` in this script so it fails as soon as one of these commands
fail instead of throwing errors for each file if they fail
Since this is only ran on macOS, and we're already using this
absolute path below, this seems like a safe addition
Reviewers: kastiglione, beanz
Reviewed By: kastiglione
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D49776
llvm-svn: 346099
In PR39475:
https://bugs.llvm.org/show_bug.cgi?id=39475
..we may fail to recognize/simplify fabs() in some cases because we do not
canonicalize fcmp with a -0.0 operand.
Adding that canonicalization can cause regressions on min/max FP tests, so
that's this patch: for the purpose of determining whether something is min/max,
let the value returned by the select determine how we treat a 0.0 operand in the fcmp.
This patch doesn't actually change the -0.0 to +0.0. It just changes the analysis, so
we don't fail to recognize equivalent min/max patterns that only differ in the
signbit of 0.0.
Differential Revision: https://reviews.llvm.org/D54001
llvm-svn: 346097
This patch adds a couple new functions to acquire the macro's name, and also
expands it, although it doesn't expand the arguments, as seen from the test files
Differential Revision: https://reviews.llvm.org/D52794
llvm-svn: 346095
Summary:
A fairly simple operation as setting a breakpoint (writing a breakpoint
opcode) at a given address was going through three classes:
NativeProcessProtocol which called NativeBreakpointList, which then
called SoftwareBrekpoint, only to end up again in NativeProcessProtocol
to do the actual writing itself. This is unnecessarily complex and can
be simplified by moving all of the logic into NativeProcessProtocol
class itself, removing a lot of boilerplate.
One of the reeasons for this complexity was that (it seems)
NativeBreakpointList class was meant to hold both software and hardware
breakpoints. However, that never materialized, and hardware breakpoints
are stored in a separate map holding only hardware breakpoints.
Essentially, this patch makes software breakpoints follow that approach
by replacing the heavy SoftwareBraekpoint with a light struct of the
same name, which holds only the data necessary to describe one
breakpoint. The rest of the logic is in the main class. As, at the
lldb-server level, handling software and hardware breakpoints is very
different, this seems like a reasonable state of things.
Reviewers: krytarowski, zturner, clayborg
Subscribers: mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D52941
llvm-svn: 346093
dotest.py started reporting:
Exception: Found multiple tests with the name TestSampleTest.py
After the commit of:
https://reviews.llvm.org/D54056
llvm-svn: 346089
This makes the tests stricter by not only matching the runtime file
name, but the entire path into the resource directory.
Differential Revision: https://reviews.llvm.org/D54064
llvm-svn: 346088
These methods were just wrappers around getNode with additional asserts (identical and repeated 3 times). But getNode already has a switch that can be used to hold these asserts that allows them to be shared for all 3 opcodes. This also enables checking on the places that create these nodes without using the wrappers.
The rest of the patch is just changing all callers to use getNode directly.
llvm-svn: 346087
Summary:
The test case added in this diff would incorrectly warn that control
flow may fall through without returning. Here's a standalone example:
https://godbolt.org/z/dCwXEi
The same program, but using `return` instead of `co_return`, does not
produce a warning: https://godbolt.org/z/mVldqQ
The issue was in how Clang analysis would structure its representation
of the control-flow graph. Specifically, when constructing the CFG,
`CFGBuilder::Visit` had special handling of a `ReturnStmt`, in which it
would place object destructors in the same CFG block as a `return` statement,
immediately after it. Doing so would allow the logic in
`lib/Sema/AnalysisBasedWarning.cpp` `CheckFallThrough` to work properly in the
program that used `return`, correctly determining that no "plain edges" preceded
the exit block of the function.
Because a `co_return` statement would not enjoy the same treatment when
it was being built into the control-flow graph, object destructors
would not be placed in the same CFG block as the `co_return`, thus
resulting in a "plain edge" preceding the exit block of the function,
and so the warning logic would be triggered.
Add special casing for `co_return` to Clang analysis, thereby
remedying the mistaken warning.
Test Plan: `check-clang`
Reviewers: GorNishanov, tks2103, rsmith
Reviewed By: GorNishanov
Subscribers: EricWF, lewissbaker, cfe-commits
Differential Revision: https://reviews.llvm.org/D54075
llvm-svn: 346074
This patch gives the IR ComputeNumSignBits the same functionality as the
DAG version (the code is derived from the existing code).
This an extension of the single input shuffle analysis added with D53659.
Differential Revision: https://reviews.llvm.org/D53987
llvm-svn: 346071
This test checks the entire output of a help option, the problem
is that on Windows, the line break occurs in a different place
causing the CHECK to fail because it is not expecting a line break.
llvm-svn: 346070
Summary:
This CL adds /Zc:DllexportInlines flag to clang-cl.
When Zc:DllexportInlines- is specified, inline class member function is not exported if the function does not have local static variables.
By not exporting inline function, code for those functions are not generated and that reduces both compile time and obj size. Also this flag does not import inline functions from dllimported class if the function does not have local static variables.
On my 24C48T windows10 machine, build performance of chrome target in chromium repository is like below.
These stats are come with 'target_cpu="x86" enable_nacl = false is_component_build=true dcheck_always_on=true` build config and applied
* https://chromium-review.googlesource.com/c/chromium/src/+/1212379
* https://chromium-review.googlesource.com/c/v8/v8/+/1186017
Below stats were taken with this patch applied on a05115cd4c
| config | build time | speedup | build dir size |
| with patch, PCH on, debug | 1h10m0s | x1.13 | 35.6GB |
| without patch, PCH on, debug | 1h19m17s | | 49.0GB |
| with patch, PCH off, debug | 1h15m45s | x1.16 | 33.7GB |
| without patch, PCH off, debug | 1h28m10s | | 52.3GB |
| with patch, PCH on, release | 1h13m13s | x1.22 | 26.2GB |
| without patch, PCH on, release | 1h29m57s | | 37.5GB |
| with patch, PCH off, release | 1h23m38s | x1.32 | 23.7GB |
| without patch, PCH off, release | 1h50m50s | | 38.7GB |
This patch reduced obj size and the number of exported symbols largely, that improved link time too.
e.g. link time stats of blink_core.dll become like below
| | cold disk cache | warm disk cache |
| with patch, PCH on, debug | 71s | 30s |
| without patch, PCH on, debug | 111s | 48s |
This patch's implementation is based on Nico Weber's patch. I modified to support static local variable, added tests and took stats.
Bug: https://bugs.llvm.org/show_bug.cgi?id=33628
Reviewers: hans, thakis, rnk, javed.absar
Reviewed By: hans
Subscribers: kristof.beyls, smeenai, dschuff, probinson, cfe-commits, eraman
Differential Revision: https://reviews.llvm.org/D51340
llvm-svn: 346069
This exposes a (known) CodeGen bug: it can't cope with emitting lvalue
expressions that denote non-odr-used but usable-in-constant-expression
variables. See PR39528 for a testcase.
Reverted for now until that issue can be fixed.
llvm-svn: 346065
This avoids introducing unnecessary DT_NEEDED entries when using
C++ driver for linking C code or C++ code that doesn't use C++
standard library.
Differential Revision: https://reviews.llvm.org/D53854
llvm-svn: 346064
Use MachineFrameInfo's OffsetAdjustment field to pass this information
from the target to CodeViewDebug.cpp. The X86 backend doesn't use it for
any other purpose.
This fixes PR38857 in the case where there is a non-aligned quantity of
CSRs and a non-aligned quantity of locals.
llvm-svn: 346062
Adding functionality to the DWARF verifier for DWARF v5 strx* forms which
index into the string offsets table.
Differential Revision: https://reviews.llvm.org/D54049
llvm-svn: 346061
Kristof Umann