gcc/
2017-04-10 Claudiu Zissulescu <claz...@synopsys.com>
* config/arc/arc.md (mulsi3): Avoid use of hard registers before
reg-alloc when having mul64 or mul32x16 instructions.
(mulsidi3): Likewise.
(umulsidi3): Likewise.
(mulsi32x16): New pattern.
(mulsi64): Likewise.
(mulsidi64): Likewise.
(umulsidi64): Likewise.
(MUL32x16_REG): Define.
(mul64_600): Use MUL32x16_REG.
(mac64_600): Likewise.
(umul64_600): Likewise.
(umac64_600): Likewise.
---
gcc/config/arc/arc.md | 168 +++++++++++++++++++++++++++++++++++---------------
1 file changed, 119 insertions(+), 49 deletions(-)
diff --git a/gcc/config/arc/arc.md b/gcc/config/arc/arc.md
index db5867c..c0ad86c 100644
--- a/gcc/config/arc/arc.md
+++ b/gcc/config/arc/arc.md
@@ -176,6 +176,7 @@
(ILINK2_REGNUM 30)
(RETURN_ADDR_REGNUM 31)
(MUL64_OUT_REG 58)
+ (MUL32x16_REG 56)
(ARCV2_ACC 58)
(LP_COUNT 60)
@@ -1940,29 +1941,17 @@
}
else if (TARGET_MUL64_SET)
{
- emit_insn (gen_mulsi_600 (operands[1], operands[2],
- gen_mlo (), gen_mhi ()));
- emit_move_insn (operands[0], gen_mlo ());
- DONE;
+ rtx tmp = gen_reg_rtx (SImode);
+ emit_insn (gen_mulsi64 (tmp, operands[1], operands[2]));
+ emit_move_insn (operands[0], tmp);
+ DONE;
}
else if (TARGET_MULMAC_32BY16_SET)
{
- if (immediate_operand (operands[2], SImode)
- && INTVAL (operands[2]) >= 0
- && INTVAL (operands[2]) <= 65535)
- {
- emit_insn (gen_umul_600 (operands[1], operands[2],
- gen_acc2 (), gen_acc1 ()));
- emit_move_insn (operands[0], gen_acc2 ());
- DONE;
- }
- operands[2] = force_reg (SImode, operands[2]);
- emit_insn (gen_umul_600 (operands[1], operands[2],
- gen_acc2 (), gen_acc1 ()));
- emit_insn (gen_mac_600 (operands[1], operands[2],
- gen_acc2 (), gen_acc1 ()));
- emit_move_insn (operands[0], gen_acc2 ());
- DONE;
+ rtx tmp = gen_reg_rtx (SImode);
+ emit_insn (gen_mulsi32x16 (tmp, operands[1], operands[2]));
+ emit_move_insn (operands[0], tmp);
+ DONE;
}
else
{
@@ -1974,6 +1963,35 @@
}
})
+(define_insn_and_split "mulsi32x16"
+ [(set (match_operand:SI 0 "register_operand" "=w")
+ (mult:SI (match_operand:SI 1 "register_operand" "%c")
+ (match_operand:SI 2 "nonmemory_operand" "ci")))
+ (clobber (reg:DI MUL32x16_REG))]
+ "TARGET_MULMAC_32BY16_SET"
+ "#"
+ "TARGET_MULMAC_32BY16_SET && reload_completed"
+ [(const_int 0)]
+ {
+ if (immediate_operand (operands[2], SImode)
+ && INTVAL (operands[2]) >= 0
+ && INTVAL (operands[2]) <= 65535)
+ {
+ emit_insn (gen_umul_600 (operands[1], operands[2],
+ gen_acc2 (), gen_acc1 ()));
+ emit_move_insn (operands[0], gen_acc2 ());
+ DONE;
+ }
+ emit_insn (gen_umul_600 (operands[1], operands[2],
+ gen_acc2 (), gen_acc1 ()));
+ emit_insn (gen_mac_600 (operands[1], operands[2],
+ gen_acc2 (), gen_acc1 ()));
+ emit_move_insn (operands[0], gen_acc2 ());
+ DONE;
+ }
+ [(set_attr "type" "multi")
+ (set_attr "length" "8")])
+
; mululw conditional execution without a LIMM clobbers an input register;
; we'd need a different pattern to describe this.
; To make the conditional execution valid for the LIMM alternative, we
@@ -2011,6 +2029,24 @@
(set_attr "predicable" "no, no, yes")
(set_attr "cond" "nocond, canuse_limm, canuse")])
+(define_insn_and_split "mulsi64"
+ [(set (match_operand:SI 0 "register_operand" "=w")
+ (mult:SI (match_operand:SI 1 "register_operand" "%c")
+ (match_operand:SI 2 "nonmemory_operand" "ci")))
+ (clobber (reg:DI MUL64_OUT_REG))]
+ "TARGET_MUL64_SET"
+ "#"
+ "TARGET_MUL64_SET && reload_completed"
+ [(const_int 0)]
+{
+ emit_insn (gen_mulsi_600 (operands[1], operands[2],
+ gen_mlo (), gen_mhi ()));
+ emit_move_insn (operands[0], gen_mlo ());
+ DONE;
+}
+ [(set_attr "type" "multi")
+ (set_attr "length" "8")])
+
(define_insn "mulsi_600"
[(set (match_operand:SI 2 "mlo_operand" "")
(mult:SI (match_operand:SI 0 "register_operand" "%Rcq#q,c,c,c")
@@ -2155,8 +2191,7 @@
(mult:DI (sign_extend:DI (match_operand:SI 1 "register_operand" ""))
(sign_extend:DI (match_operand:SI 2 "nonmemory_operand" ""))))]
"TARGET_ANY_MPY"
-"
-{
+ {
if (TARGET_PLUS_MACD)
{
if (CONST_INT_P (operands[2]))
@@ -2189,18 +2224,37 @@
}
else if (TARGET_MULMAC_32BY16_SET)
{
- rtx result_hi = gen_highpart(SImode, operands[0]);
- rtx result_low = gen_lowpart(SImode, operands[0]);
-
- emit_insn (gen_mul64_600 (operands[1], operands[2]));
- emit_insn (gen_mac64_600 (result_hi, operands[1], operands[2]));
- emit_move_insn (result_low, gen_acc2 ());
+ operands[2] = force_reg (SImode, operands[2]);
+ emit_insn (gen_mulsidi64 (operands[0], operands[1], operands[2]));
DONE;
}
-}")
+ operands[2] = force_reg (SImode, operands[2]);
+ })
+
+(define_insn_and_split "mulsidi64"
+ [(set (match_operand:DI 0 "register_operand" "=w")
+ (mult:DI (sign_extend:DI (match_operand:SI 1 "register_operand" "%c"))
+ (sign_extend:DI (match_operand:SI 2 "extend_operand" "ci"))))
+ (clobber (reg:DI MUL32x16_REG))]
+ "TARGET_MULMAC_32BY16_SET"
+ "#"
+ "TARGET_MULMAC_32BY16_SET && reload_completed"
+ [(const_int 0)]
+ {
+ rtx result_hi = gen_highpart (SImode, operands[0]);
+ rtx result_low = gen_lowpart (SImode, operands[0]);
+
+ emit_insn (gen_mul64_600 (operands[1], operands[2]));
+ emit_insn (gen_mac64_600 (result_hi, operands[1], operands[2]));
+ emit_move_insn (result_low, gen_acc2 ());
+ DONE;
+ }
+ [(set_attr "type" "multi")
+ (set_attr "length" "8")])
+
(define_insn "mul64_600"
- [(set (reg:DI 56)
+ [(set (reg:DI MUL32x16_REG)
(mult:DI (sign_extend:DI (match_operand:SI 0 "register_operand"
"c,c,c"))
(zero_extract:DI (match_operand:SI 1 "nonmemory_operand"
@@ -2218,14 +2272,14 @@
;; ??? check if this is canonical rtl
(define_insn "mac64_600"
- [(set (reg:DI 56)
+ [(set (reg:DI MUL32x16_REG)
(plus:DI
(mult:DI (sign_extend:DI (match_operand:SI 1 "register_operand"
"c,c,c"))
(ashift:DI
(sign_extract:DI (match_operand:SI 2 "nonmemory_operand"
"c,L,Cal")
(const_int 16) (const_int 16))
(const_int 16)))
- (reg:DI 56)))
+ (reg:DI MUL32x16_REG)))
(set (match_operand:SI 0 "register_operand" "=w,w,w")
(zero_extract:SI
(plus:DI
@@ -2234,7 +2288,7 @@
(sign_extract:DI (match_dup 2)
(const_int 16) (const_int 16))
(const_int 16)))
- (reg:DI 56))
+ (reg:DI MUL32x16_REG))
(const_int 32) (const_int 32)))]
"TARGET_MULMAC_32BY16_SET"
"machlw%? %0, %1, %2"
@@ -2428,20 +2482,14 @@
}
else if (TARGET_MUL64_SET)
{
- emit_insn (gen_umulsidi_600 (operands[0], operands[1], operands[2]));
+ operands[2] = force_reg (SImode, operands[2]);
+ emit_insn (gen_umulsidi_600 (operands[0], operands[1], operands[2]));
DONE;
}
else if (TARGET_MULMAC_32BY16_SET)
{
- rtx result_hi = gen_reg_rtx (SImode);
- rtx result_low = gen_reg_rtx (SImode);
-
- result_hi = gen_highpart(SImode , operands[0]);
- result_low = gen_lowpart(SImode , operands[0]);
-
- emit_insn (gen_umul64_600 (operands[1], operands[2]));
- emit_insn (gen_umac64_600 (result_hi, operands[1], operands[2]));
- emit_move_insn (result_low, gen_acc2 ());
+ operands[2] = force_reg (SImode, operands[2]);
+ emit_insn (gen_umulsidi64 (operands[0], operands[1], operands[2]));
DONE;
}
else
@@ -2454,8 +2502,32 @@
}
})
+(define_insn_and_split "umulsidi64"
+ [(set (match_operand:DI 0 "register_operand" "=w")
+ (mult:DI (zero_extend:DI (match_operand:SI 1 "register_operand" "%c"))
+ (zero_extend:DI (match_operand:SI 2 "extend_operand" "ci"))))
+ (clobber (reg:DI MUL32x16_REG))]
+ "TARGET_MULMAC_32BY16_SET"
+ "#"
+ "TARGET_MULMAC_32BY16_SET && reload_completed"
+ [(const_int 0)]
+ {
+ rtx result_hi;
+ rtx result_low;
+
+ result_hi = gen_highpart (SImode, operands[0]);
+ result_low = gen_lowpart (SImode, operands[0]);
+
+ emit_insn (gen_umul64_600 (operands[1], operands[2]));
+ emit_insn (gen_umac64_600 (result_hi, operands[1], operands[2]));
+ emit_move_insn (result_low, gen_acc2 ());
+ DONE;
+ }
+ [(set_attr "type" "multi")
+ (set_attr "length" "8")])
+
(define_insn "umul64_600"
- [(set (reg:DI 56)
+ [(set (reg:DI MUL32x16_REG)
(mult:DI (zero_extend:DI (match_operand:SI 0 "register_operand"
"c,c,c"))
(zero_extract:DI (match_operand:SI 1 "nonmemory_operand"
@@ -2472,14 +2544,14 @@
(define_insn "umac64_600"
- [(set (reg:DI 56)
+ [(set (reg:DI MUL32x16_REG)
(plus:DI
(mult:DI (zero_extend:DI (match_operand:SI 1 "register_operand"
"c,c,c"))
(ashift:DI
(zero_extract:DI (match_operand:SI 2 "nonmemory_operand"
"c,L,Cal")
(const_int 16) (const_int 16))
(const_int 16)))
- (reg:DI 56)))
+ (reg:DI MUL32x16_REG)))
(set (match_operand:SI 0 "register_operand" "=w,w,w")
(zero_extract:SI
(plus:DI
@@ -2488,7 +2560,7 @@
(zero_extract:DI (match_dup 2)
(const_int 16) (const_int 16))
(const_int 16)))
- (reg:DI 56))
+ (reg:DI MUL32x16_REG))
(const_int 32) (const_int 32)))]
"TARGET_MULMAC_32BY16_SET"
"machulw%? %0, %1, %2"
@@ -2497,8 +2569,6 @@
(set_attr "predicable" "no,no,yes")
(set_attr "cond" "nocond, canuse_limm, canuse")])
-
-
;; DI <- DI(unsigned SI) * DI(unsigned SI)
(define_insn_and_split "umulsidi3_700"
[(set (match_operand:DI 0 "dest_reg_operand" "=&r")
--
1.9.1
