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| author | Roger Sayle <roger@nextmovesoftware.com> | 2020-08-04 15:31:42 +0200 |
|---|---|---|
| committer | Tom de Vries <tdevries@suse.de> | 2020-08-05 00:44:10 +0200 |
| commit | 37a4c06f3dac9b0b831a8f34af73422aa4f42fbe (patch) | |
| tree | 4138e044ce8fec52b2257ef0ef427a51f173768f | |
| parent | 97def1f34c134d78d4423e9ac3e9b262417ea390 (diff) | |
| download | gcc-37a4c06f3dac9b0b831a8f34af73422aa4f42fbe.zip gcc-37a4c06f3dac9b0b831a8f34af73422aa4f42fbe.tar.gz gcc-37a4c06f3dac9b0b831a8f34af73422aa4f42fbe.tar.bz2 | |
[PATCH] nvptx: Add support for PTX highpart multiplications (HI/SI)
This patch adds support for signed and unsigned, HImode and SImode highpart
multiplications to the nvptx backend.
This patch has been tested on nvptx-none hosted on x86_64-pc-linux-gnu
with a "make" and "make -k check" with no new failures with the
above patch.
2020-08-04 Roger Sayle <roger@nextmovesoftware.com>
gcc/ChangeLog:
* config/nvptx/nvptx.md (smulhi3_highpart, smulsi3_highpart)
(umulhi3_highpart, umulsi3_highpart): New instructions.
gcc/testsuite/ChangeLog:
* gcc.target/nvptx/mul-hi.c: New test.
* gcc.target/nvptx/umul-hi.c: New test.
| -rw-r--r-- | gcc/config/nvptx/nvptx.md | 48 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/nvptx/mul-hi.c | 15 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/nvptx/umul-hi.c | 15 |
3 files changed, 78 insertions, 0 deletions
diff --git a/gcc/config/nvptx/nvptx.md b/gcc/config/nvptx/nvptx.md index c23edcf..4168190 100644 --- a/gcc/config/nvptx/nvptx.md +++ b/gcc/config/nvptx/nvptx.md @@ -568,6 +568,54 @@ "" "%.\\tmul.wide.u32\\t%0, %1, %2;") +(define_insn "smulhi3_highpart" + [(set (match_operand:HI 0 "nvptx_register_operand" "=R") + (truncate:HI + (lshiftrt:SI + (mult:SI (sign_extend:SI + (match_operand:HI 1 "nvptx_register_operand" "R")) + (sign_extend:SI + (match_operand:HI 2 "nvptx_register_operand" "R"))) + (const_int 16))))] + "" + "%.\\tmul.hi.s16\\t%0, %1, %2;") + +(define_insn "smulsi3_highpart" + [(set (match_operand:SI 0 "nvptx_register_operand" "=R") + (truncate:SI + (lshiftrt:DI + (mult:DI (sign_extend:DI + (match_operand:SI 1 "nvptx_register_operand" "R")) + (sign_extend:DI + (match_operand:SI 2 "nvptx_register_operand" "R"))) + (const_int 32))))] + "" + "%.\\tmul.hi.s32\\t%0, %1, %2;") + +(define_insn "umulhi3_highpart" + [(set (match_operand:HI 0 "nvptx_register_operand" "=R") + (truncate:HI + (lshiftrt:SI + (mult:SI (zero_extend:SI + (match_operand:HI 1 "nvptx_register_operand" "R")) + (zero_extend:SI + (match_operand:HI 2 "nvptx_register_operand" "R"))) + (const_int 16))))] + "" + "%.\\tmul.hi.u16\\t%0, %1, %2;") + +(define_insn "umulsi3_highpart" + [(set (match_operand:SI 0 "nvptx_register_operand" "=R") + (truncate:SI + (lshiftrt:DI + (mult:DI (zero_extend:DI + (match_operand:SI 1 "nvptx_register_operand" "R")) + (zero_extend:DI + (match_operand:SI 2 "nvptx_register_operand" "R"))) + (const_int 32))))] + "" + "%.\\tmul.hi.u32\\t%0, %1, %2;") + ;; Shifts (define_insn "ashl<mode>3" diff --git a/gcc/testsuite/gcc.target/nvptx/mul-hi.c b/gcc/testsuite/gcc.target/nvptx/mul-hi.c new file mode 100644 index 0000000..c66fa38 --- /dev/null +++ b/gcc/testsuite/gcc.target/nvptx/mul-hi.c @@ -0,0 +1,15 @@ +/* { dg-do assemble } */ +/* { dg-options "-O2 -save-temps" } */ + +short smulhi3_highpart(short x, short y) +{ + return ((int)x * (int)y) >> 16; +} + +int smulsi3_highpart(int x, int y) +{ + return ((long)x * (long)y) >> 32; +} + +/* { dg-final { scan-assembler-times "mul.hi.s16" 1 } } */ +/* { dg-final { scan-assembler-times "mul.hi.s32" 1 } } */ diff --git a/gcc/testsuite/gcc.target/nvptx/umul-hi.c b/gcc/testsuite/gcc.target/nvptx/umul-hi.c new file mode 100644 index 0000000..3b35d6b --- /dev/null +++ b/gcc/testsuite/gcc.target/nvptx/umul-hi.c @@ -0,0 +1,15 @@ +/* { dg-do assemble } */ +/* { dg-options "-O2 -save-temps" } */ + +unsigned short umulhi3_highpart(unsigned short x, unsigned short y) +{ + return ((unsigned int)x * (unsigned int)y) >> 16; +} + +unsigned int umulsi3_highpart(unsigned int x, unsigned int y) +{ + return ((unsigned long)x * (unsigned long)y) >> 32; +} + +/* { dg-final { scan-assembler-times "mul.hi.u16" 1 } } */ +/* { dg-final { scan-assembler-times "mul.hi.u32" 1 } } */ |