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| author | Andrew Pinski <apinski@marvell.com> | 2022-01-09 23:39:31 -0800 |
|---|---|---|
| committer | Andrew Pinski <apinski@marvell.com> | 2022-01-23 22:17:59 +0000 |
| commit | cbcf4a50fa21abd7a4a50a7ce47ada80b115febc (patch) | |
| tree | b12e35dc952601d083fbb9ece21f2ad46802fd85 /gcc/config | |
| parent | 603a9ab41f4fd2748407fecf8b4ce2e5f9f71c23 (diff) | |
| download | gcc-cbcf4a50fa21abd7a4a50a7ce47ada80b115febc.zip gcc-cbcf4a50fa21abd7a4a50a7ce47ada80b115febc.tar.gz gcc-cbcf4a50fa21abd7a4a50a7ce47ada80b115febc.tar.bz2 | |
[aarch64/64821]: Simplify __builtin_aarch64_sqrt* into internal function .SQRT.
This is a simple patch which simplifies the __builtin_aarch64_sqrt* builtins
into the internal function SQRT which allows for constant folding and other
optimizations at the gimple level. It was originally suggested we do to
__builtin_sqrt just for __builtin_aarch64_sqrtdf when -fno-math-errno
but since r6-4969-g686ee9719a4 we have the internal function SQRT which does
the same so it makes we don't need to check -fno-math-errno either now.
Applied as approved after bootstrapped and tested on aarch64-linux-gnu with no regressions.
PR target/64821
gcc/ChangeLog:
* config/aarch64/aarch64-builtins.cc
(aarch64_general_gimple_fold_builtin): Handle
__builtin_aarch64_sqrt* and simplify into SQRT internal
function.
gcc/testsuite/ChangeLog:
* gcc.target/aarch64/vsqrt-1.c: New test.
* gcc.target/aarch64/vsqrt-2.c: New test.
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/aarch64/aarch64-builtins.cc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/config/aarch64/aarch64-builtins.cc b/gcc/config/aarch64/aarch64-builtins.cc index b7f338d..5217dbd 100644 --- a/gcc/config/aarch64/aarch64-builtins.cc +++ b/gcc/config/aarch64/aarch64-builtins.cc @@ -2820,6 +2820,13 @@ aarch64_general_gimple_fold_builtin (unsigned int fcode, gcall *stmt, gimple_call_set_lhs (new_stmt, gimple_call_lhs (stmt)); break; + /* Lower sqrt builtins to gimple/internal function sqrt. */ + BUILTIN_VHSDF_DF (UNOP, sqrt, 2, FP) + new_stmt = gimple_build_call_internal (IFN_SQRT, + 1, args[0]); + gimple_call_set_lhs (new_stmt, gimple_call_lhs (stmt)); + break; + /*lower store and load neon builtins to gimple. */ BUILTIN_VALL_F16 (LOAD1, ld1, 0, LOAD) BUILTIN_VDQ_I (LOAD1_U, ld1, 0, LOAD) |