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| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2021-03-30 15:43:36 +0100 |
|---|---|---|
| committer | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2021-03-30 15:43:36 +0100 |
| commit | 19199a6f2b0f4ce4b100856c78706d56a16b1956 (patch) | |
| tree | f2d8b40b2c33cc40cd67c9bac772184ed94315b5 /gcc/cgraphclones.c | |
| parent | f64b91568f3ac8f152c6c617b4fcc6b51da10ac4 (diff) | |
| download | gcc-19199a6f2b0f4ce4b100856c78706d56a16b1956.zip gcc-19199a6f2b0f4ce4b100856c78706d56a16b1956.tar.gz gcc-19199a6f2b0f4ce4b100856c78706d56a16b1956.tar.bz2 | |
aarch64: PR target/99822 Don't allow zero register in first operand of SUBS/ADDS-immediate
In this PR we end up generating an invalid instruction:
adds x1,xzr,#2
because the pattern accepts zero as an operand in the comparison, but the instruction doesn't.
Fix it by adjusting the predicate and constraints.
gcc/ChangeLog:
PR target/99822
* config/aarch64/aarch64.md (sub<mode>3_compare1_imm): Do not allow zero
in operand 1.
gcc/testsuite/ChangeLog:
PR target/99822
* gcc.c-torture/compile/pr99822.c: New test.
Diffstat (limited to 'gcc/cgraphclones.c')
0 files changed, 0 insertions, 0 deletions