diff options
| author | iverbin <iverbin@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-06-21 14:32:38 +0000 |
|---|---|---|
| committer | iverbin <iverbin@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-06-21 14:32:38 +0000 |
| commit | 49763db6f71429c61da1fda88f614585c3df6245 (patch) | |
| tree | b924121c2319170fff3ebaf0994fb98c6c11bdb2 /gcc/config/i386/i386.c | |
| parent | ada61167d8e79b9a6f86faad584256ebe427102a (diff) | |
| download | gcc-49763db6f71429c61da1fda88f614585c3df6245.tar.gz | |
[AVX-512ER] vrcp28ps auto generation
gcc/
* config/i386/i386.c (ix86_emit_swdivsf): Emit vrcp28ps.
gcc/testsuite/
* gcc.target/i386/avx512er-vrcp28ps-3.c: New test.
* gcc.target/i386/avx512er-vrcp28ps-4.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@237648 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/config/i386/i386.c')
| -rw-r--r-- | gcc/config/i386/i386.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 17664ff9f17..8139807512b 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -48726,8 +48726,19 @@ void ix86_emit_swdivsf (rtx res, rtx a, rtx b, machine_mode mode) /* x0 = rcp(b) estimate */ if (mode == V16SFmode || mode == V8DFmode) - emit_insn (gen_rtx_SET (x0, gen_rtx_UNSPEC (mode, gen_rtvec (1, b), - UNSPEC_RCP14))); + { + if (TARGET_AVX512ER) + { + emit_insn (gen_rtx_SET (x0, gen_rtx_UNSPEC (mode, gen_rtvec (1, b), + UNSPEC_RCP28))); + /* res = a * x0 */ + emit_insn (gen_rtx_SET (res, gen_rtx_MULT (mode, a, x0))); + return; + } + else + emit_insn (gen_rtx_SET (x0, gen_rtx_UNSPEC (mode, gen_rtvec (1, b), + UNSPEC_RCP14))); + } else emit_insn (gen_rtx_SET (x0, gen_rtx_UNSPEC (mode, gen_rtvec (1, b), UNSPEC_RCP))); |