diff options
| author | Yuri Rumyantsev <ysrumyan@gmail.com> | 2013-08-12 12:28:47 +0000 |
|---|---|---|
| committer | Kirill Yukhin <kyukhin@gcc.gnu.org> | 2013-08-12 12:28:47 +0000 |
| commit | 15dd8b3a8cafc3a3238b6e773b1bb2be69fc1bac (patch) | |
| tree | 0f30bd565ba3195c6e1413da339b4584e77445dc /gcc | |
| parent | 94109a6a3a769c33b3f26c1eafd3b80ef7bf1f07 (diff) | |
| download | gcc-15dd8b3a8cafc3a3238b6e773b1bb2be69fc1bac.zip gcc-15dd8b3a8cafc3a3238b6e773b1bb2be69fc1bac.tar.gz gcc-15dd8b3a8cafc3a3238b6e773b1bb2be69fc1bac.tar.bz2 | |
i386.md (floatunssi<mode>2 expand): Add new expand for QI/HImode operand to produce more effictive code for...
* config/i386/i386.md (floatunssi<mode>2 expand): Add new
expand for QI/HImode operand to produce more effictive code for
unsigned char(short) --> float(double) conversion.
From-SVN: r201663
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/i386/i386.md | 12 |
2 files changed, 18 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 21b66d6..44e964b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2013-08-12 Yuri Rumyantsev <ysrumyan@gmail.com> + + * config/i386/i386.md (floatunssi<mode>2 expand): Add new + expand for QI/HImode operand to produce more effictive code for + unsigned char(short) --> float(double) conversion. + 2013-08-12 Alexander Monakov <amonakov@ispras.ru> * doc/invoke.texi: Mention that -ftls-model does not force the final diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 84515ae..b878874 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -5037,6 +5037,18 @@ && reload_completed" [(set (match_dup 0) (float:X87MODEF (match_dup 1)))]) +(define_expand "floatuns<SWI12:mode><X87MODEF:mode>2" + [(set (match_operand:X87MODEF 0 "register_operand") + (unsigned_float:X87MODEF + (match_operand:SWI12 1 "nonimmediate_operand")))] + "!TARGET_64BIT + && SSE_FLOAT_MODE_P (<X87MODEF:MODE>mode) && TARGET_SSE_MATH" +{ + operands[1] = convert_to_mode (SImode, operands[1], 1); + emit_insn (gen_floatsi<X87MODEF:mode>2 (operands[0], operands[1])); + DONE; +}) + ;; Avoid store forwarding (partial memory) stall penalty by extending ;; SImode value to DImode through XMM register instead of pushing two ;; SImode values to stack. Note that even !TARGET_INTER_UNIT_MOVES_TO_VEC |