[dev.ssa] cmd/compiler/internal/ssa: Add auxint field
Add an additional int64 auxiliary field to Value.
There are two main reasons for doing this:
1) Ints in interfaces require allocation, and we store ints in Aux a lot.
2) I'd like to have both *gc.Sym and int offsets included in lots
of operations (e.g. MOVQloadidx8). It will be more efficient to
store them as separate fields instead of a pointer to a sym/int pair.
It also simplifies a bunch of code.
This is just the refactoring. I'll start using this some more in a
subsequent changelist.
Change-Id: I1ca797ff572553986cf90cab3ac0a0c1d01ad241
Reviewed-on: https://go-review.googlesource.com/10929
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
diff --git a/src/cmd/compile/internal/ssa/gen/genericOps.go b/src/cmd/compile/internal/ssa/gen/genericOps.go
index 4a69192..c168f2a 100644
--- a/src/cmd/compile/internal/ssa/gen/genericOps.go
+++ b/src/cmd/compile/internal/ssa/gen/genericOps.go
@@ -37,9 +37,9 @@
{name: "Func"}, // entry address of a function
// Memory operations
- {name: "Load"}, // Load from arg0+aux.(int64). arg1=memory
- {name: "Store"}, // Store arg1 to arg0+aux.(int64). arg2=memory. Returns memory.
- {name: "Move"}, // arg0=destptr, arg1=srcptr, arg2=mem, aux.(int64)=size. Returns memory.
+ {name: "Load"}, // Load from arg0. arg1=memory
+ {name: "Store"}, // Store arg1 to arg0. arg2=memory. Returns memory.
+ {name: "Move"}, // arg0=destptr, arg1=srcptr, arg2=mem, auxint=size. Returns memory.
// Function calls. Arguments to the call have already been written to the stack.
// Return values appear on the stack. The method receiver, if any, is treated
@@ -58,7 +58,7 @@
// Indexing operations
{name: "ArrayIndex"}, // arg0=array, arg1=index. Returns a[i]
{name: "PtrIndex"}, // arg0=ptr, arg1=index. Computes ptr+sizeof(*v.type)*index, where index is extended to ptrwidth type
- {name: "OffPtr"}, // arg0 + aux.(int64) (arg0 and result are pointers)
+ {name: "OffPtr"}, // arg0 + auxint (arg0 and result are pointers)
// Slices
{name: "SliceMake"}, // arg0=ptr, arg1=len, arg2=cap
