Second attempt:
Massive check in. This changes the "-fast" flag to "-O#" in llc. If you want to
use the old behavior, the flag is -O0. This change allows for finer-grained
control over which optimizations are run at different -O levels.
Most of this work was pretty mechanical. The majority of the fixes came from
verifying that a "fast" variable wasn't used anymore. The JIT still uses a
"Fast" flag. I'll change the JIT with a follow-up patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70343 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 0b019fd..25305ea 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -55,8 +55,8 @@
class VISIBILITY_HIDDEN SelectionDAGLegalize {
TargetLowering &TLI;
SelectionDAG &DAG;
+ unsigned OptLevel;
bool TypesNeedLegalizing;
- bool Fast;
// Libcall insertion helpers.
@@ -139,7 +139,7 @@
public:
explicit SelectionDAGLegalize(SelectionDAG &DAG, bool TypesNeedLegalizing,
- bool fast);
+ unsigned ol);
/// getTypeAction - Return how we should legalize values of this type, either
/// it is already legal or we need to expand it into multiple registers of
@@ -345,9 +345,9 @@
}
SelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag,
- bool types, bool fast)
- : TLI(dag.getTargetLoweringInfo()), DAG(dag), TypesNeedLegalizing(types),
- Fast(fast), ValueTypeActions(TLI.getValueTypeActions()) {
+ bool types, unsigned ol)
+ : TLI(dag.getTargetLoweringInfo()), DAG(dag), OptLevel(ol),
+ TypesNeedLegalizing(types), ValueTypeActions(TLI.getValueTypeActions()) {
assert(MVT::LAST_VALUETYPE <= 32 &&
"Too many value types for ValueTypeActions to hold!");
}
@@ -1271,7 +1271,7 @@
unsigned Line = DSP->getLine();
unsigned Col = DSP->getColumn();
- if (Fast) {
+ if (OptLevel == 0) {
// A bit self-referential to have DebugLoc on Debug_Loc nodes, but it
// won't hurt anything.
if (useDEBUG_LOC) {
@@ -8566,9 +8566,9 @@
// SelectionDAG::Legalize - This is the entry point for the file.
//
-void SelectionDAG::Legalize(bool TypesNeedLegalizing, bool Fast) {
+void SelectionDAG::Legalize(bool TypesNeedLegalizing, unsigned OptLevel) {
/// run - This is the main entry point to this class.
///
- SelectionDAGLegalize(*this, TypesNeedLegalizing, Fast).LegalizeDAG();
+ SelectionDAGLegalize(*this, TypesNeedLegalizing, OptLevel).LegalizeDAG();
}