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| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2023-04-23 14:44:13 +0100 |
|---|---|---|
| committer | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2023-04-23 14:44:13 +0100 |
| commit | 7e26fd6bcd39f53bc917f55f8cce6101180c1dcd (patch) | |
| tree | 2f05b9206b2a8d47ec5965239c07be5235aef965 /gcc/tree-ssa-phiopt.cc | |
| parent | 3b13c59c835f92b353ef318398e39907cdeec4fa (diff) | |
| download | gcc-7e26fd6bcd39f53bc917f55f8cce6101180c1dcd.zip gcc-7e26fd6bcd39f53bc917f55f8cce6101180c1dcd.tar.gz gcc-7e26fd6bcd39f53bc917f55f8cce6101180c1dcd.tar.bz2 | |
aarch64: Annotate fcvtn pattern for vec_concat with zeroes
Using the define_substs in aarch64-simd.md this is a straightforward annotation to remove
a redundant fmov insn.
So the codegen goes from:
foo_d:
fcvtn v0.2s, v0.2d
fmov d0, d0
ret
to the simple:
foo_d:
fcvtn v0.2s, v0.2d
ret
Bootstrapped and tested on aarch64-none-linux-gnu.
gcc/ChangeLog:
* config/aarch64/aarch64-simd.md (aarch64_float_truncate_lo_): Rename to...
(aarch64_float_truncate_lo_<mode><vczle><vczbe>): ... This.
gcc/testsuite/ChangeLog:
* gcc.target/aarch64/float_truncate_zero.c: New test.
Diffstat (limited to 'gcc/tree-ssa-phiopt.cc')
0 files changed, 0 insertions, 0 deletions