llvm-project

Commit Graph

Author	SHA1	Message	Date
Reid Kleckner	3fc649cb76	[Support] Rename tool_output_file to ToolOutputFile, NFC This class isn't similar to anything from the STL, so it shouldn't use the STL naming conventions. llvm-svn: 314050	2017-09-23 01:03:17 +00:00
Michael Kruse	e4292bf086	[Support] Add -polly-dump-module pass. This pass allows writing the LLVM-IR just before and after the Polly passes to a file. Dumping the IR before Polly helps reproducing bugs that occur in code generated by clang. It is the only reliable way to get the IR that triggers a bug. The alternative is to emit the IR with clang -c -emit-llvm -S -o dump.ll then pass it through all optimization passes opt dump.ll -basicaa -sroa ... -S -o optdump.ll to then reproduce the error with opt optdump.ll -polly-opt-isl -polly-codegen -analyze However, the IR is not the same. -O3 uses a PassBuilder than creates passes with different parameters than the default. Dumping the IR after Polly is useful to compare a miscompilation with a known-good configuration. Differential Revision: https://reviews.llvm.org/D30788 llvm-svn: 297415	2017-03-09 22:29:58 +00:00

Author

SHA1

Message

Date

Reid Kleckner

3fc649cb76

[Support] Rename tool_output_file to ToolOutputFile, NFC

This class isn't similar to anything from the STL, so it shouldn't use
the STL naming conventions.

llvm-svn: 314050

2017-09-23 01:03:17 +00:00

Michael Kruse

e4292bf086

[Support] Add -polly-dump-module pass.

This pass allows writing the LLVM-IR just before and after the Polly
passes to a file.

Dumping the IR before Polly helps reproducing bugs that occur in code
generated by clang. It is the only reliable way to get the IR that
triggers a bug. The alternative is to emit the IR with

    clang -c -emit-llvm -S -o dump.ll

then pass it through all optimization passes

    opt dump.ll -basicaa -sroa ... -S -o optdump.ll

to then reproduce the error with

    opt optdump.ll -polly-opt-isl -polly-codegen -analyze

However, the IR is not the same. -O3 uses a PassBuilder than creates passes
with different parameters than the default.

Dumping the IR after Polly is useful to compare a miscompilation with
a known-good configuration.

Differential Revision: https://reviews.llvm.org/D30788

llvm-svn: 297415

2017-03-09 22:29:58 +00:00

2 Commits