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Re-materialize all loads from fixed stack slots.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35660 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2007-04-04 07:40:01 +00:00
parent a96c5b3040
commit 9193514e2e
3 changed files with 34 additions and 15 deletions
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8
lib/CodeGen/VirtRegMap.h
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@@ -31,8 +31,8 @@ namespace llvm {
public:
enum {
NO_PHYS_REG = 0,
NO_STACK_SLOT = ~0 >> 1,
MAX_STACK_SLOT = (1 << 18)-1
NO_STACK_SLOT = (1L << 30)-1,
MAX_STACK_SLOT = (1L << 18)-1
};
enum ModRef { isRef = 1, isMod = 2, isModRef = 3 };
@@ -60,13 +60,13 @@ namespace llvm {
/// read/written by this instruction.
MI2VirtMapTy MI2VirtMap;
/// ReMatMap - This is irtual register to re-materialized instruction
/// ReMatMap - This is virtual register to re-materialized instruction
/// mapping. Each virtual register whose definition is going to be
/// re-materialized has an entry in it.
std::map<unsigned, const MachineInstr*> ReMatMap;
/// ReMatId - Instead of assigning a stack slot to a to be rematerialized
/// virtaul register, an unique id is being assinged. This keeps track of
/// virtual register, an unique id is being assigned. This keeps track of
/// the highest id used so far. Note, this starts at (1<<18) to avoid
/// conflicts with stack slot numbers.
int ReMatId;