diff options
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))); |