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The only caveat is that:

1. We do not properly recognize when we have a let binding and we
perform a guaranteed dynamic call. In such a case, we add an extra
retain, release pair around the call. In order to get that case I will
need to refactor some code in Callee. I want to make this change, but
not at the expense of getting the rest of this work in.

2. Some of the protocol witness thunks generated have unnecessary
retains or releases in a similar manner.

But this is a good first step.

I am going to send a large follow up email with all of the relevant results, so
I can let the bots chew on this a little bit.

rdar://19933044

Swift SVN r27241
This commit is contained in:
Michael Gottesman
2015-04-12 22:23:37 +00:00
parent bffbc8f92f
commit 75ea31dba9
78 changed files with 517 additions and 381 deletions
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15
test/sil-extract/basic.swift
View File

@@ -14,8 +14,8 @@
// EXTRACT-FOO-NOT: sil hidden @_TFV5basic1X4testfS0_FT_T_ : $@cc(method) @thin (X) -> () {
// EXTRACT-FOO-NOT: sil hidden @_TFC5basic7VehiclecfMS0_FT1nSi_S0_ : $@cc(method) @thin (Int, @owned Vehicle) -> @owned Vehicle {
// EXTRACT-FOO-NOT: sil hidden @_TFC5basic7Vehicle3nowfS0_FT_Si : $@cc(method) @thin (@owned Vehicle) -> Int {
// EXTRACT-FOO-NOT: sil hidden @_TFC5basic7VehiclecfMS0_FT1nSi_S0_ : $@cc(method) @thin (Int, @guaranteed Vehicle) -> @owned Vehicle {
// EXTRACT-FOO-NOT: sil hidden @_TFC5basic7Vehicle3nowfS0_FT_Si : $@cc(method) @thin (@guaranteed Vehicle) -> Int {
// EXTRACT-FOO-LABEL: sil hidden @_TF5basic3fooFT_Si : $@thin () -> Int {
// EXTRACT-FOO: bb0:
@@ -25,8 +25,8 @@
// EXTRACT-TEST-NOT: sil hidden @_TF5basic3fooFT_Si : $@thin () -> Int {
// EXTRACT-TEST-NOT: sil hidden @_TFC5basic7VehiclecfMS0_FT1nSi_S0_ : $@cc(method) @thin (Int, @owned Vehicle) -> @owned Vehicle {
// EXTRACT-TEST-NOT: sil hidden @_TFC5basic7Vehicle3nowfS0_FT_Si : $@cc(method) @thin (@owned Vehicle) -> Int {
// EXTRACT-TEST-NOT: sil hidden @_TFC5basic7VehiclecfMS0_FT1nSi_S0_ : $@cc(method) @thin (Int, @guaranteed Vehicle) -> @owned Vehicle {
// EXTRACT-TEST-NOT: sil hidden @_TFC5basic7Vehicle3nowfS0_FT_Si : $@cc(method) @thin (@guaranteed Vehicle) -> Int {
// EXTRACT-TEST-LABEL: sil hidden @_TFV5basic1X4testfS0_FT_T_ : $@cc(method) @thin (X) -> () {
// EXTRACT-TEST: bb0(%0 : $X):
@@ -53,16 +53,13 @@
// EXTRACT-NOW-NOT: sil hidden @_TF5basic3fooFT_Si : $@thin () -> Int {
// EXTRACT-NOW-NOT: sil hidden @_TFV5basic1X4testfS0_FT_T_ : $@cc(method) @thin (X) -> () {
// EXTRACT-NOW-NOT: sil hidden @_TFC5basic7VehiclecfMS0_FT1nSi_S0_ : $@cc(method) @thin (Int, @owned Vehicle) -> @owned Vehicle {
// EXTRACT-NOW-NOT: sil hidden @_TFC5basic7VehiclecfMS0_FT1nSi_S0_ : $@cc(method) @thin (Int, @guaranteed Vehicle) -> @owned Vehicle {
// EXTRACT-NOW-LABEL: sil hidden @_TFC5basic7Vehicle3nowfS0_FT_Si : $@cc(method) @thin (@owned Vehicle) -> Int {
// EXTRACT-NOW-LABEL: sil hidden @_TFC5basic7Vehicle3nowfS0_FT_Si : $@cc(method) @thin (@guaranteed Vehicle) -> Int {
// EXTRACT-NOW: bb0
// EXTRACT-NOW-NEXT: debug_value
// EXTRACT-NOW-NEXT: strong_retain
// EXTRACT-NOW-NEXT: ref_element_addr
// EXTRACT-NOW-NEXT: load
// EXTRACT-NOW-NEXT: strong_release
// EXTRACT-NOW-NEXT: strong_release
// EXTRACT-NOW-NEXT: return
struct X {