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| author | H.J. Lu <hjl.tools@gmail.com> | 2024-02-01 08:02:27 -0800 |
|---|---|---|
| committer | H.J. Lu <(no_default)> | 2024-02-05 11:08:06 -0800 |
| commit | 51f8ac3341078303e81e72d9013698a31c5ddd29 (patch) | |
| tree | 28829f5cd1502a8aec2fa6045e17b216b2230c28 /libgo | |
| parent | 62babed519afba58b7efeb0e968d97a666b68fd3 (diff) | |
| download | gcc-51f8ac3341078303e81e72d9013698a31c5ddd29.zip gcc-51f8ac3341078303e81e72d9013698a31c5ddd29.tar.gz gcc-51f8ac3341078303e81e72d9013698a31c5ddd29.tar.bz2 | |
x86-64: Find a scratch register for large model profiling
2 scratch registers, %r10 and %r11, are available at function entry for
large model profiling. But %r10 may be used by stack realignment and we
can't use %r10 in this case. Add x86_64_select_profile_regnum to find
a caller-saved register which isn't live or a callee-saved register
which has been saved on stack in the prologue at entry for large model
profiling and sorry if we can't find one.
gcc/
PR target/113689
* config/i386/i386.cc (x86_64_select_profile_regnum): New.
(x86_function_profiler): Call x86_64_select_profile_regnum to
get a scratch register for large model profiling.
gcc/testsuite/
PR target/113689
* gcc.target/i386/pr113689-1.c: New file.
* gcc.target/i386/pr113689-2.c: Likewise.
* gcc.target/i386/pr113689-3.c: Likewise.
Diffstat (limited to 'libgo')
0 files changed, 0 insertions, 0 deletions