31933f4f78
We should make sure that the hard register set that is actually cleared by the target hook zero_call_used_regs should be a subset of all call used registers. At the same time, update documentation for the target hook TARGET_ZERO_CALL_USED_REGS. This new assertion identified a bug in the i386 implemenation, which incorrectly set the zeroed_hardregs for stack registers. Fixed this bug in i386 implementation. gcc/ChangeLog: 2022-04-01 Qing Zhao <qing.zhao@oracle.com> * config/i386/i386.cc (zero_all_st_registers): Return the value of num_of_st. (ix86_zero_call_used_regs): Update zeroed_hardregs set according to the return value of zero_all_st_registers. * doc/tm.texi: Update the documentation of TARGET_ZERO_CALL_USED_REGS. * function.cc (gen_call_used_regs_seq): Add an assertion. * target.def: Update the documentation of TARGET_ZERO_CALL_USED_REGS. |
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| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| intl | ||
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| libcpp | ||
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| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libiberty | ||
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| libobjc | ||
| liboffloadmic | ||
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| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
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| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
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| .gitignore | ||
| ABOUT-NLS | ||
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| depcomp | ||
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| libtool-ldflags | ||
| libtool.m4 | ||
| lt~obsolete.m4 | ||
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