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-rw-r--r--compiler/dex/vreg_analysis.cc201
1 files changed, 126 insertions, 75 deletions
diff --git a/compiler/dex/vreg_analysis.cc b/compiler/dex/vreg_analysis.cc
index 07f37bbbbb..32fac0b393 100644
--- a/compiler/dex/vreg_analysis.cc
+++ b/compiler/dex/vreg_analysis.cc
@@ -29,6 +29,16 @@ bool MIRGraph::SetFp(int index, bool is_fp) {
return change;
}
+bool MIRGraph::SetFp(int index) {
+ bool change = false;
+ if (!reg_location_[index].fp) {
+ reg_location_[index].fp = true;
+ reg_location_[index].defined = true;
+ change = true;
+ }
+ return change;
+}
+
bool MIRGraph::SetCore(int index, bool is_core) {
bool change = false;
if (is_core && !reg_location_[index].defined) {
@@ -39,6 +49,16 @@ bool MIRGraph::SetCore(int index, bool is_core) {
return change;
}
+bool MIRGraph::SetCore(int index) {
+ bool change = false;
+ if (!reg_location_[index].defined) {
+ reg_location_[index].core = true;
+ reg_location_[index].defined = true;
+ change = true;
+ }
+ return change;
+}
+
bool MIRGraph::SetRef(int index, bool is_ref) {
bool change = false;
if (is_ref && !reg_location_[index].defined) {
@@ -49,6 +69,16 @@ bool MIRGraph::SetRef(int index, bool is_ref) {
return change;
}
+bool MIRGraph::SetRef(int index) {
+ bool change = false;
+ if (!reg_location_[index].defined) {
+ reg_location_[index].ref = true;
+ reg_location_[index].defined = true;
+ change = true;
+ }
+ return change;
+}
+
bool MIRGraph::SetWide(int index, bool is_wide) {
bool change = false;
if (is_wide && !reg_location_[index].wide) {
@@ -58,6 +88,15 @@ bool MIRGraph::SetWide(int index, bool is_wide) {
return change;
}
+bool MIRGraph::SetWide(int index) {
+ bool change = false;
+ if (!reg_location_[index].wide) {
+ reg_location_[index].wide = true;
+ change = true;
+ }
+ return change;
+}
+
bool MIRGraph::SetHigh(int index, bool is_high) {
bool change = false;
if (is_high && !reg_location_[index].high_word) {
@@ -67,6 +106,16 @@ bool MIRGraph::SetHigh(int index, bool is_high) {
return change;
}
+bool MIRGraph::SetHigh(int index) {
+ bool change = false;
+ if (!reg_location_[index].high_word) {
+ reg_location_[index].high_word = true;
+ change = true;
+ }
+ return change;
+}
+
+
/*
* Infer types and sizes. We don't need to track change on sizes,
* as it doesn't propagate. We're guaranteed at least one pass through
@@ -84,21 +133,23 @@ bool MIRGraph::InferTypeAndSize(BasicBlock* bb) {
SSARepresentation *ssa_rep = mir->ssa_rep;
if (ssa_rep) {
int attrs = oat_data_flow_attributes_[mir->dalvikInsn.opcode];
+ const int* uses = ssa_rep->uses;
+ const int* defs = ssa_rep->defs;
// Handle defs
if (attrs & DF_DA) {
if (attrs & DF_CORE_A) {
- changed |= SetCore(ssa_rep->defs[0], true);
+ changed |= SetCore(defs[0]);
}
if (attrs & DF_REF_A) {
- changed |= SetRef(ssa_rep->defs[0], true);
+ changed |= SetRef(defs[0]);
}
if (attrs & DF_A_WIDE) {
- reg_location_[ssa_rep->defs[0]].wide = true;
- reg_location_[ssa_rep->defs[1]].wide = true;
- reg_location_[ssa_rep->defs[1]].high_word = true;
- DCHECK_EQ(SRegToVReg(ssa_rep->defs[0])+1,
- SRegToVReg(ssa_rep->defs[1]));
+ reg_location_[defs[0]].wide = true;
+ reg_location_[defs[1]].wide = true;
+ reg_location_[defs[1]].high_word = true;
+ DCHECK_EQ(SRegToVReg(defs[0])+1,
+ SRegToVReg(defs[1]));
}
}
@@ -106,17 +157,17 @@ bool MIRGraph::InferTypeAndSize(BasicBlock* bb) {
int next = 0;
if (attrs & DF_UA) {
if (attrs & DF_CORE_A) {
- changed |= SetCore(ssa_rep->uses[next], true);
+ changed |= SetCore(uses[next]);
}
if (attrs & DF_REF_A) {
- changed |= SetRef(ssa_rep->uses[next], true);
+ changed |= SetRef(uses[next]);
}
if (attrs & DF_A_WIDE) {
- reg_location_[ssa_rep->uses[next]].wide = true;
- reg_location_[ssa_rep->uses[next + 1]].wide = true;
- reg_location_[ssa_rep->uses[next + 1]].high_word = true;
- DCHECK_EQ(SRegToVReg(ssa_rep->uses[next])+1,
- SRegToVReg(ssa_rep->uses[next + 1]));
+ reg_location_[uses[next]].wide = true;
+ reg_location_[uses[next + 1]].wide = true;
+ reg_location_[uses[next + 1]].high_word = true;
+ DCHECK_EQ(SRegToVReg(uses[next])+1,
+ SRegToVReg(uses[next + 1]));
next += 2;
} else {
next++;
@@ -124,17 +175,17 @@ bool MIRGraph::InferTypeAndSize(BasicBlock* bb) {
}
if (attrs & DF_UB) {
if (attrs & DF_CORE_B) {
- changed |= SetCore(ssa_rep->uses[next], true);
+ changed |= SetCore(uses[next]);
}
if (attrs & DF_REF_B) {
- changed |= SetRef(ssa_rep->uses[next], true);
+ changed |= SetRef(uses[next]);
}
if (attrs & DF_B_WIDE) {
- reg_location_[ssa_rep->uses[next]].wide = true;
- reg_location_[ssa_rep->uses[next + 1]].wide = true;
- reg_location_[ssa_rep->uses[next + 1]].high_word = true;
- DCHECK_EQ(SRegToVReg(ssa_rep->uses[next])+1,
- SRegToVReg(ssa_rep->uses[next + 1]));
+ reg_location_[uses[next]].wide = true;
+ reg_location_[uses[next + 1]].wide = true;
+ reg_location_[uses[next + 1]].high_word = true;
+ DCHECK_EQ(SRegToVReg(uses[next])+1,
+ SRegToVReg(uses[next + 1]));
next += 2;
} else {
next++;
@@ -142,17 +193,17 @@ bool MIRGraph::InferTypeAndSize(BasicBlock* bb) {
}
if (attrs & DF_UC) {
if (attrs & DF_CORE_C) {
- changed |= SetCore(ssa_rep->uses[next], true);
+ changed |= SetCore(uses[next]);
}
if (attrs & DF_REF_C) {
- changed |= SetRef(ssa_rep->uses[next], true);
+ changed |= SetRef(uses[next]);
}
if (attrs & DF_C_WIDE) {
- reg_location_[ssa_rep->uses[next]].wide = true;
- reg_location_[ssa_rep->uses[next + 1]].wide = true;
- reg_location_[ssa_rep->uses[next + 1]].high_word = true;
- DCHECK_EQ(SRegToVReg(ssa_rep->uses[next])+1,
- SRegToVReg(ssa_rep->uses[next + 1]));
+ reg_location_[uses[next]].wide = true;
+ reg_location_[uses[next + 1]].wide = true;
+ reg_location_[uses[next + 1]].high_word = true;
+ DCHECK_EQ(SRegToVReg(uses[next])+1,
+ SRegToVReg(uses[next + 1]));
}
}
@@ -162,27 +213,27 @@ bool MIRGraph::InferTypeAndSize(BasicBlock* bb) {
(mir->dalvikInsn.opcode == Instruction::RETURN_OBJECT)) {
switch (cu_->shorty[0]) {
case 'I':
- changed |= SetCore(ssa_rep->uses[0], true);
+ changed |= SetCore(uses[0]);
break;
case 'J':
- changed |= SetCore(ssa_rep->uses[0], true);
- changed |= SetCore(ssa_rep->uses[1], true);
- reg_location_[ssa_rep->uses[0]].wide = true;
- reg_location_[ssa_rep->uses[1]].wide = true;
- reg_location_[ssa_rep->uses[1]].high_word = true;
+ changed |= SetCore(uses[0]);
+ changed |= SetCore(uses[1]);
+ reg_location_[uses[0]].wide = true;
+ reg_location_[uses[1]].wide = true;
+ reg_location_[uses[1]].high_word = true;
break;
case 'F':
- changed |= SetFp(ssa_rep->uses[0], true);
+ changed |= SetFp(uses[0]);
break;
case 'D':
- changed |= SetFp(ssa_rep->uses[0], true);
- changed |= SetFp(ssa_rep->uses[1], true);
- reg_location_[ssa_rep->uses[0]].wide = true;
- reg_location_[ssa_rep->uses[1]].wide = true;
- reg_location_[ssa_rep->uses[1]].high_word = true;
+ changed |= SetFp(uses[0]);
+ changed |= SetFp(uses[1]);
+ reg_location_[uses[0]].wide = true;
+ reg_location_[uses[1]].wide = true;
+ reg_location_[uses[1]].high_word = true;
break;
case 'L':
- changed |= SetRef(ssa_rep->uses[0], true);
+ changed |= SetRef(uses[0]);
break;
default: break;
}
@@ -206,10 +257,10 @@ bool MIRGraph::InferTypeAndSize(BasicBlock* bb) {
SSARepresentation* tgt_rep = move_result_mir->ssa_rep;
DCHECK(tgt_rep != NULL);
tgt_rep->fp_def[0] = true;
- changed |= SetFp(tgt_rep->defs[0], true);
+ changed |= SetFp(tgt_rep->defs[0]);
if (shorty[0] == 'D') {
tgt_rep->fp_def[1] = true;
- changed |= SetFp(tgt_rep->defs[1], true);
+ changed |= SetFp(tgt_rep->defs[1]);
}
}
}
@@ -217,8 +268,8 @@ bool MIRGraph::InferTypeAndSize(BasicBlock* bb) {
// If this is a non-static invoke, mark implicit "this"
if (((mir->dalvikInsn.opcode != Instruction::INVOKE_STATIC) &&
(mir->dalvikInsn.opcode != Instruction::INVOKE_STATIC_RANGE))) {
- reg_location_[ssa_rep->uses[next]].defined = true;
- reg_location_[ssa_rep->uses[next]].ref = true;
+ reg_location_[uses[next]].defined = true;
+ reg_location_[uses[next]].ref = true;
next++;
}
uint32_t cpos = 1;
@@ -229,28 +280,28 @@ bool MIRGraph::InferTypeAndSize(BasicBlock* bb) {
case 'D':
ssa_rep->fp_use[i] = true;
ssa_rep->fp_use[i+1] = true;
- reg_location_[ssa_rep->uses[i]].wide = true;
- reg_location_[ssa_rep->uses[i+1]].wide = true;
- reg_location_[ssa_rep->uses[i+1]].high_word = true;
- DCHECK_EQ(SRegToVReg(ssa_rep->uses[i])+1, SRegToVReg(ssa_rep->uses[i+1]));
+ reg_location_[uses[i]].wide = true;
+ reg_location_[uses[i+1]].wide = true;
+ reg_location_[uses[i+1]].high_word = true;
+ DCHECK_EQ(SRegToVReg(uses[i])+1, SRegToVReg(uses[i+1]));
i++;
break;
case 'J':
- reg_location_[ssa_rep->uses[i]].wide = true;
- reg_location_[ssa_rep->uses[i+1]].wide = true;
- reg_location_[ssa_rep->uses[i+1]].high_word = true;
- DCHECK_EQ(SRegToVReg(ssa_rep->uses[i])+1, SRegToVReg(ssa_rep->uses[i+1]));
- changed |= SetCore(ssa_rep->uses[i], true);
+ reg_location_[uses[i]].wide = true;
+ reg_location_[uses[i+1]].wide = true;
+ reg_location_[uses[i+1]].high_word = true;
+ DCHECK_EQ(SRegToVReg(uses[i])+1, SRegToVReg(uses[i+1]));
+ changed |= SetCore(uses[i]);
i++;
break;
case 'F':
ssa_rep->fp_use[i] = true;
break;
case 'L':
- changed |= SetRef(ssa_rep->uses[i], true);
+ changed |= SetRef(uses[i]);
break;
default:
- changed |= SetCore(ssa_rep->uses[i], true);
+ changed |= SetCore(uses[i]);
break;
}
i++;
@@ -260,11 +311,11 @@ bool MIRGraph::InferTypeAndSize(BasicBlock* bb) {
for (int i = 0; ssa_rep->fp_use && i< ssa_rep->num_uses; i++) {
if (ssa_rep->fp_use[i])
- changed |= SetFp(ssa_rep->uses[i], true);
+ changed |= SetFp(uses[i]);
}
for (int i = 0; ssa_rep->fp_def && i< ssa_rep->num_defs; i++) {
if (ssa_rep->fp_def[i])
- changed |= SetFp(ssa_rep->defs[i], true);
+ changed |= SetFp(defs[i]);
}
// Special-case handling for moves & Phi
if (attrs & (DF_IS_MOVE | DF_NULL_TRANSFER_N)) {
@@ -276,14 +327,14 @@ bool MIRGraph::InferTypeAndSize(BasicBlock* bb) {
*/
bool is_phi = (static_cast<int>(mir->dalvikInsn.opcode) ==
kMirOpPhi);
- RegLocation rl_temp = reg_location_[ssa_rep->defs[0]];
+ RegLocation rl_temp = reg_location_[defs[0]];
bool defined_fp = rl_temp.defined && rl_temp.fp;
bool defined_core = rl_temp.defined && rl_temp.core;
bool defined_ref = rl_temp.defined && rl_temp.ref;
bool is_wide = rl_temp.wide || ((attrs & DF_A_WIDE) != 0);
bool is_high = is_phi && rl_temp.wide && rl_temp.high_word;
for (int i = 0; i < ssa_rep->num_uses; i++) {
- rl_temp = reg_location_[ssa_rep->uses[i]];
+ rl_temp = reg_location_[uses[i]];
defined_fp |= rl_temp.defined && rl_temp.fp;
defined_core |= rl_temp.defined && rl_temp.core;
defined_ref |= rl_temp.defined && rl_temp.ref;
@@ -303,26 +354,26 @@ bool MIRGraph::InferTypeAndSize(BasicBlock* bb) {
<< " has both fp and core/ref uses for same def.";
cu_->disable_opt |= (1 << kPromoteRegs);
}
- changed |= SetFp(ssa_rep->defs[0], defined_fp);
- changed |= SetCore(ssa_rep->defs[0], defined_core);
- changed |= SetRef(ssa_rep->defs[0], defined_ref);
- changed |= SetWide(ssa_rep->defs[0], is_wide);
- changed |= SetHigh(ssa_rep->defs[0], is_high);
+ changed |= SetFp(defs[0], defined_fp);
+ changed |= SetCore(defs[0], defined_core);
+ changed |= SetRef(defs[0], defined_ref);
+ changed |= SetWide(defs[0], is_wide);
+ changed |= SetHigh(defs[0], is_high);
if (attrs & DF_A_WIDE) {
- changed |= SetWide(ssa_rep->defs[1], true);
- changed |= SetHigh(ssa_rep->defs[1], true);
+ changed |= SetWide(defs[1]);
+ changed |= SetHigh(defs[1]);
}
for (int i = 0; i < ssa_rep->num_uses; i++) {
- changed |= SetFp(ssa_rep->uses[i], defined_fp);
- changed |= SetCore(ssa_rep->uses[i], defined_core);
- changed |= SetRef(ssa_rep->uses[i], defined_ref);
- changed |= SetWide(ssa_rep->uses[i], is_wide);
- changed |= SetHigh(ssa_rep->uses[i], is_high);
+ changed |= SetFp(uses[i], defined_fp);
+ changed |= SetCore(uses[i], defined_core);
+ changed |= SetRef(uses[i], defined_ref);
+ changed |= SetWide(uses[i], is_wide);
+ changed |= SetHigh(uses[i], is_high);
}
if (attrs & DF_A_WIDE) {
DCHECK_EQ(ssa_rep->num_uses, 2);
- changed |= SetWide(ssa_rep->uses[1], true);
- changed |= SetHigh(ssa_rep->uses[1], true);
+ changed |= SetWide(uses[1]);
+ changed |= SetHigh(uses[1]);
}
}
}
@@ -444,7 +495,7 @@ void MIRGraph::BuildRegLocations() {
}
/* Do type & size inference pass */
- PreOrderDfsIterator iter(this, true /* iterative */);
+ RepeatingPreOrderDfsIterator iter(this);
bool change = false;
for (BasicBlock* bb = iter.Next(false); bb != NULL; bb = iter.Next(change)) {
change = InferTypeAndSize(bb);
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-23 08:00:59 +0000