cmd/compile: intrinsify math/big.mulWW, divWW on AMD64
Change-Id: I59f7afa7a5803d19f8b21fe70fc85ef997bb3a85
Reviewed-on: https://go-review.googlesource.com/30542
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
diff --git a/src/cmd/compile/internal/ssa/gen/genericOps.go b/src/cmd/compile/internal/ssa/gen/genericOps.go
index c1bc38c..22ddc8f 100644
--- a/src/cmd/compile/internal/ssa/gen/genericOps.go
+++ b/src/cmd/compile/internal/ssa/gen/genericOps.go
@@ -58,6 +58,9 @@
{name: "Hmul64", argLength: 2},
{name: "Hmul64u", argLength: 2},
+ {name: "Mul32uhilo", argLength: 2, typ: "(UInt32,UInt32)"}, // arg0 * arg1, returns (hi, lo)
+ {name: "Mul64uhilo", argLength: 2, typ: "(UInt64,UInt64)"}, // arg0 * arg1, returns (hi, lo)
+
// Weird special instruction for strength reduction of divides.
{name: "Avg64u", argLength: 2}, // (uint64(arg0) + uint64(arg1)) / 2, correct to all 64 bits.
@@ -69,6 +72,7 @@
{name: "Div32u", argLength: 2},
{name: "Div64", argLength: 2},
{name: "Div64u", argLength: 2},
+ {name: "Div128u", argLength: 3}, // arg0:arg1 / arg2 (128-bit divided by 64-bit), returns (q, r)
{name: "Mod8", argLength: 2}, // arg0 % arg1, signed
{name: "Mod8u", argLength: 2}, // arg0 % arg1, unsigned
@@ -424,8 +428,6 @@
{name: "Sub32carry", argLength: 2, typ: "(UInt32,Flags)"}, // arg0 - arg1, returns (value, carry)
{name: "Sub32withcarry", argLength: 3}, // arg0 - arg1 - arg2, arg2=carry (0 or 1)
- {name: "Mul32uhilo", argLength: 2, typ: "(UInt32,UInt32)"}, // arg0 * arg1, returns (hi, lo)
-
{name: "Signmask", argLength: 1, typ: "Int32"}, // 0 if arg0 >= 0, -1 if arg0 < 0
{name: "Zeromask", argLength: 1, typ: "UInt32"}, // 0 if arg0 == 0, 0xffffffff if arg0 != 0
