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| author | Tejas Joshi <tejasjoshi9673@gmail.com> | 2019-08-26 12:41:59 +0000 |
|---|---|---|
| committer | Martin Jambor <jamborm@gcc.gnu.org> | 2019-08-26 14:41:59 +0200 |
| commit | d3b92f35d84f44a8599028086286699213b73e7c (patch) | |
| tree | 68dd8aabf68a9b3ef68b677082dbe5c480fe7ae5 /gcc/config/i386/i386.c | |
| parent | 7d7b99f95bf2517caab5f9300090b471135b4fc0 (diff) | |
| download | gcc-d3b92f35d84f44a8599028086286699213b73e7c.zip gcc-d3b92f35d84f44a8599028086286699213b73e7c.tar.gz gcc-d3b92f35d84f44a8599028086286699213b73e7c.tar.bz2 | |
i386: Roundeven expansion for SSE4.1+
gcc/ChangeLog:
2019-08-26 Tejas Joshi <tejasjoshi9673@gmail.com>
Uros Bizjak <ubizjak@gmail.com>
* builtins.c (mathfn_built_in_2): Change CASE_MATHFN to
CASE_MATHFN_FLOATN for roundeven.
* config/i386/i386.c (ix86_i387_mode_needed): Add case
I387_ROUNDEVEN.
(ix86_mode_needed): Likewise.
(ix86_mode_after): Likewise.
(ix86_mode_entry): Likewise.
(ix86_mode_exit): Likewise.
(ix86_emit_mode_set): Likewise.
(emit_i387_cw_initialization): Add case I387_CW_ROUNDEVEN.
* config/i386/i386.h (ix86_stack_slot): Add SLOT_CW_ROUNDEVEN.
(ix86_entry): Add I387_ROUNDEVEN.
(avx_u128_state): Add I387_CW_ANY.
* config/i386/i386.md: Define UNSPEC_FRNDINT_ROUNDEVEN.
(define_int_iterator): Likewise.
(define_int_attr): Likewise for rounding_insn, rounding and ROUNDING.
(define_constant): Define ROUND_ROUNDEVEN mode.
(define_attr): Add roundeven mode for i387_cw.
(<rouding_insn><mode>2): Add condition for ROUND_ROUNDEVEN.
* internal-fn.def (ROUNDEVEN): New builtin function.
* optabs.def (roundeven_optab): New optab.
gcc/testsuite/ChangeLog:
2019-08-26 Tejas Joshi <tejasjoshi9673@gmail.com>
* gcc.target/i386/sse4_1-round-roundeven-1.c: New test.
* gcc.target/i386/sse4_1-round-roundeven-2.c: New test.
Co-Authored-By: Uros Bizjak <ubizjak@gmail.com>
From-SVN: r274928
Diffstat (limited to 'gcc/config/i386/i386.c')
| -rw-r--r-- | gcc/config/i386/i386.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 49ab50e..c712c03 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -13557,6 +13557,11 @@ ix86_i387_mode_needed (int entity, rtx_insn *insn) switch (entity) { + case I387_ROUNDEVEN: + if (mode == I387_CW_ROUNDEVEN) + return mode; + break; + case I387_TRUNC: if (mode == I387_CW_TRUNC) return mode; @@ -13591,6 +13596,7 @@ ix86_mode_needed (int entity, rtx_insn *insn) return ix86_dirflag_mode_needed (insn); case AVX_U128: return ix86_avx_u128_mode_needed (insn); + case I387_ROUNDEVEN: case I387_TRUNC: case I387_FLOOR: case I387_CEIL: @@ -13651,6 +13657,7 @@ ix86_mode_after (int entity, int mode, rtx_insn *insn) return mode; case AVX_U128: return ix86_avx_u128_mode_after (mode, insn); + case I387_ROUNDEVEN: case I387_TRUNC: case I387_FLOOR: case I387_CEIL: @@ -13703,6 +13710,7 @@ ix86_mode_entry (int entity) return ix86_dirflag_mode_entry (); case AVX_U128: return ix86_avx_u128_mode_entry (); + case I387_ROUNDEVEN: case I387_TRUNC: case I387_FLOOR: case I387_CEIL: @@ -13740,6 +13748,7 @@ ix86_mode_exit (int entity) return X86_DIRFLAG_ANY; case AVX_U128: return ix86_avx_u128_mode_exit (); + case I387_ROUNDEVEN: case I387_TRUNC: case I387_FLOOR: case I387_CEIL: @@ -13774,6 +13783,12 @@ emit_i387_cw_initialization (int mode) switch (mode) { + case I387_CW_ROUNDEVEN: + /* round to nearest */ + emit_insn (gen_andhi3 (reg, reg, GEN_INT (0x0c00))); + slot = SLOT_CW_ROUNDEVEN; + break; + case I387_CW_TRUNC: /* round toward zero (truncate) */ emit_insn (gen_iorhi3 (reg, reg, GEN_INT (0x0c00))); @@ -13820,6 +13835,7 @@ ix86_emit_mode_set (int entity, int mode, int prev_mode ATTRIBUTE_UNUSED, if (mode == AVX_U128_CLEAN) emit_insn (gen_avx_vzeroupper ()); break; + case I387_ROUNDEVEN: case I387_TRUNC: case I387_FLOOR: case I387_CEIL: |