On 21/02/12 16:17, Matthew Gretton-Dann wrote: > The attached patch fixes instruction generation for unsigned vector > comparisons against a known-zero vector. > > ARM's Neon extensions only allow unsigned equality comparison against > unsigned zero, not less than or greater than comparisons. > > This patch fixes code generation - there are further changes that could be > made which would improve the code generated which will come in a > separate patch. > > This issue does not affect the auto-vectorizer. > > OK? > > Matt > > gcc/ChangeLog: > > 2012-02-21 Matthew Gretton-Dann <matthew.gretton-d...@arm.com> > > PR target/51534 > * config/arm/arm.c (neon_builtin_data): Add entries for vcgeu > and vcgtu. > * config/arm/arm_neon.h: Regenerate. > * config/arm/neon.md (unspec): Add UNSPEC_VCGEU, and UNSPEC_VCGTU. > (neon_vcgeu): New insn. > (neon_vcgtu): Likewise. > * config/arm/neon.ml (s_8_32, u_8_32): New lists. > (ops): Unsigned comparison intrinsics call a different > builtin. > > gcc/testsuite/ChangeLog: > > 2012-02-21 Matthew Gretton-Dann <matthew.gretton-d...@arm.com> > > PR target/51534 > gcc.target/arm/neon/pr51534.c: New testcase. > >
OK. R.
