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| author | bors <bors@rust-lang.org> | 2024-03-29 00:24:01 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2024-03-29 00:24:01 +0000 |
| commit | db2f9759f43167755d4eebb0a1358df9766a505e (patch) | |
| tree | ea68aa6bcc2c8bfd7d8615bfabbafa9492410ebd /compiler/rustc_monomorphize/src/errors.rs | |
| parent | d74804636fa57e80d1e213fa9d2d65b27216b515 (diff) | |
| parent | 00f4daa27673a07bf9ad20f4707d97bc1079450f (diff) | |
| download | rust-db2f9759f43167755d4eebb0a1358df9766a505e.tar.gz rust-db2f9759f43167755d4eebb0a1358df9766a505e.zip | |
Auto merge of #122671 - Mark-Simulacrum:const-panic-msg, r=Nilstrieb
Codegen const panic messages as function calls
This skips emitting extra arguments at every callsite (of which there
can be many). For a librustc_driver build with overflow checks enabled,
this cuts 0.7MB from the resulting shared library (see [perf]).
A sample improvement from nightly:
```
leaq str.0(%rip), %rdi
leaq .Lalloc_d6aeb8e2aa19de39a7f0e861c998af13(%rip), %rdx
movl $25, %esi
callq *_ZN4core9panicking5panic17h17cabb89c5bcc999E@GOTPCREL(%rip)
```
to this PR:
```
leaq .Lalloc_d6aeb8e2aa19de39a7f0e861c998af13(%rip), %rdi
callq *_RNvNtNtCsduqIKoij8JB_4core9panicking11panic_const23panic_const_div_by_zero@GOTPCREL(%rip)
```
[perf]: https://perf.rust-lang.org/compare.html?start=a7e4de13c1785819f4d61da41f6704ed69d5f203&end=64fbb4f0b2d621ff46d559d1e9f5ad89a8d7789b&stat=instructions:u
Diffstat (limited to 'compiler/rustc_monomorphize/src/errors.rs')
0 files changed, 0 insertions, 0 deletions