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[dev.ssa] cmd/compile: start arguments as spilled

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Declare a function's arguments as having already been
spilled so their use just requires a restore.

Allow spill locations to be portions of larger objects the stack.
Required to load portions of compound input arguments.

Rename the memory input to InputMem.  Use Arg for the
pre-spilled argument values.

Change-Id: I8fe2a03ffbba1022d98bfae2052b376b96d32dda
Reviewed-on: https://go-review.googlesource.com/16536
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
This commit is contained in:
Keith Randall 2015-11-02 08:10:26 -08:00
parent 582baae22a
commit 02f4d0a130
27 changed files with 470 additions and 141 deletions
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7
src/runtime/runtime-gdb_test.go
View file

@ -94,9 +94,6 @@ func TestGdbPython(t *testing.T) {
"-ex", "echo END\n",
"-ex", "echo BEGIN print strvar\n",
"-ex", "print strvar",
"-ex", "echo END\n",
"-ex", "echo BEGIN print ptrvar\n",
"-ex", "print ptrvar",
"-ex", "echo END\n"}
// without framepointer, gdb cannot backtrace our non-standard
@ -151,10 +148,6 @@ func TestGdbPython(t *testing.T) {
t.Fatalf("print strvar failed: %s", bl)
}
if bl := blocks["print ptrvar"]; !strVarRe.MatchString(bl) {
t.Fatalf("print ptrvar failed: %s", bl)
}
btGoroutineRe := regexp.MustCompile(`^#0\s+runtime.+at`)
if bl := blocks["goroutine 2 bt"]; canBackTrace && !btGoroutineRe.MatchString(bl) {
t.Fatalf("goroutine 2 bt failed: %s", bl)