Store resolved Strings for AOT code in .bss.
And do some related refactorings.
Bug: 20323084
Bug: 30627598
Test: Run ART test suite including gcstress on host and Nexus 9.
Test: Run ART test suite including gcstress with baker CC on host and Nexus 9.
Test: Build aosp_mips64-eng.
Change-Id: I1b12c1570fee8e5da490b47f231050142afcbd1e
diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h
index 4dc4c20..9c82e17 100644
--- a/compiler/optimizing/nodes.h
+++ b/compiler/optimizing/nodes.h
@@ -5660,10 +5660,9 @@
// Used for strings outside the boot image referenced by JIT-compiled code.
kDexCacheAddress,
- // Load from resolved strings array in the dex cache using a PC-relative load.
- // Used for strings outside boot image when we know that we can access
- // the dex cache arrays using a PC-relative load.
- kDexCachePcRelative,
+ // Load from an entry in the .bss section using a PC-relative load.
+ // Used for strings outside boot image when .bss is accessible with a PC-relative load.
+ kBssEntry,
// Load from resolved strings array accessed through the class loaded from
// the compiled method's own ArtMethod*. This is the default access type when
@@ -5682,7 +5681,7 @@
string_index_(string_index) {
SetPackedFlag<kFlagIsInDexCache>(false);
SetPackedField<LoadKindField>(LoadKind::kDexCacheViaMethod);
- load_data_.ref.dex_file = &dex_file;
+ load_data_.dex_file_ = &dex_file;
}
void SetLoadKindWithAddress(LoadKind load_kind, uint64_t address) {
@@ -5695,20 +5694,11 @@
const DexFile& dex_file,
uint32_t string_index) {
DCHECK(HasStringReference(load_kind));
- load_data_.ref.dex_file = &dex_file;
+ load_data_.dex_file_ = &dex_file;
string_index_ = string_index;
SetLoadKindInternal(load_kind);
}
- void SetLoadKindWithDexCacheReference(LoadKind load_kind,
- const DexFile& dex_file,
- uint32_t element_index) {
- DCHECK(HasDexCacheReference(load_kind));
- load_data_.ref.dex_file = &dex_file;
- load_data_.ref.dex_cache_element_index = element_index;
- SetLoadKindInternal(load_kind);
- }
-
LoadKind GetLoadKind() const {
return GetPackedField<LoadKindField>();
}
@@ -5720,8 +5710,6 @@
return string_index_;
}
- uint32_t GetDexCacheElementOffset() const;
-
uint64_t GetAddress() const {
DCHECK(HasAddress(GetLoadKind()));
return load_data_.address;
@@ -5791,6 +5779,7 @@
static bool HasStringReference(LoadKind load_kind) {
return load_kind == LoadKind::kBootImageLinkTimeAddress ||
load_kind == LoadKind::kBootImageLinkTimePcRelative ||
+ load_kind == LoadKind::kBssEntry ||
load_kind == LoadKind::kDexCacheViaMethod;
}
@@ -5798,10 +5787,6 @@
return load_kind == LoadKind::kBootImageAddress || load_kind == LoadKind::kDexCacheAddress;
}
- static bool HasDexCacheReference(LoadKind load_kind) {
- return load_kind == LoadKind::kDexCachePcRelative;
- }
-
void SetLoadKindInternal(LoadKind load_kind);
// The special input is the HCurrentMethod for kDexCacheViaMethod.
@@ -5814,10 +5799,7 @@
uint32_t string_index_;
union {
- struct {
- const DexFile* dex_file; // For string reference and dex cache reference.
- uint32_t dex_cache_element_index; // Only for dex cache reference.
- } ref;
+ const DexFile* dex_file_; // For string reference.
uint64_t address; // Up to 64-bit, needed for kDexCacheAddress on 64-bit targets.
} load_data_;
@@ -5827,15 +5809,8 @@
// Note: defined outside class to see operator<<(., HLoadString::LoadKind).
inline const DexFile& HLoadString::GetDexFile() const {
- DCHECK(HasStringReference(GetLoadKind()) || HasDexCacheReference(GetLoadKind()))
- << GetLoadKind();
- return *load_data_.ref.dex_file;
-}
-
-// Note: defined outside class to see operator<<(., HLoadString::LoadKind).
-inline uint32_t HLoadString::GetDexCacheElementOffset() const {
- DCHECK(HasDexCacheReference(GetLoadKind())) << GetLoadKind();
- return load_data_.ref.dex_cache_element_index;
+ DCHECK(HasStringReference(GetLoadKind())) << GetLoadKind();
+ return *load_data_.dex_file_;
}
// Note: defined outside class to see operator<<(., HLoadString::LoadKind).
@@ -5843,7 +5818,7 @@
// The special input is used for PC-relative loads on some architectures,
// including literal pool loads, which are PC-relative too.
DCHECK(GetLoadKind() == LoadKind::kBootImageLinkTimePcRelative ||
- GetLoadKind() == LoadKind::kDexCachePcRelative ||
+ GetLoadKind() == LoadKind::kBssEntry ||
GetLoadKind() == LoadKind::kBootImageLinkTimeAddress ||
GetLoadKind() == LoadKind::kBootImageAddress) << GetLoadKind();
// HLoadString::GetInputRecords() returns an empty array at this point,