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author | Uros Bizjak <ubizjak@gmail.com> | 2021-06-09 09:46:00 +0200 |
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committer | Uros Bizjak <ubizjak@gmail.com> | 2021-06-09 09:46:42 +0200 |
commit | 267dbd42f42c52a515f49c0875d296a9cf5988fe (patch) | |
tree | c01901d59c851d28d87b018b74aa9c8412920bfa /gcc/fortran/trans-openmp.c | |
parent | 59d6713a138edf60827189b27c6b4ce98069c196 (diff) | |
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i386: Do not emit segment overrides for %p and %P [PR100936]
Using %p to move the address of a symbol using LEA:
asm ("lea %p1, %0" : "=r"(addr) : "m"(var));
emits assembler warning when VAR is declared in a non-generic address space:
Warning: segment override on `lea' is ineffectual
The problem is with %p operand modifier, which should emit raw symbol name:
p -- print raw symbol name.
Similar problem exists with %P modifier, trying to CALL or JMP to an
overridden symbol,e.g:
call %gs:zzz
jmp %gs:zzz
emits assembler warning:
Warning: skipping prefixes on `call'
Warning: skipping prefixes on `jmp'
Ensure that %p and %P never emit segment overrides.
2021-06-08 Uroš Bizjak <ubizjak@gmail.com>
gcc/
PR target/100936
* config/i386/i386.c (print_operand_address_as): Rename "no_rip"
argument to "raw". Do not emit segment overrides when "raw" is true.
gcc/testsuite/
PR target/100936
* gcc.target/i386/pr100936.c: New test.
Diffstat (limited to 'gcc/fortran/trans-openmp.c')
0 files changed, 0 insertions, 0 deletions