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Change rename to rename the flattened register index instead of the architectural one.

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--HG--
extra : convert_revision : 757866ad7a3c8be7382e1ffa71c60bc00c861f6f
This commit is contained in:
Gabe Black 2006-12-06 05:55:23 -05:00
parent 6456cb535c
commit 156cf0db51
1 changed files with 20 additions and 5 deletions
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25
src/cpu/o3/rename_impl.hh
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@ -31,6 +31,8 @@
#include <list>
#include "arch/isa_traits.hh"
#include "arch/regfile.hh"
#include "config/full_system.hh"
#include "cpu/o3/rename.hh"
@ -960,13 +962,19 @@ DefaultRename<Impl>::renameSrcRegs(DynInstPtr &inst,unsigned tid)
// Will need to mark dependencies though.
for (int src_idx = 0; src_idx < num_src_regs; src_idx++) {
RegIndex src_reg = inst->srcRegIdx(src_idx);
RegIndex flat_src_reg = src_reg;
if (src_reg < TheISA::FP_Base_DepTag) {
flat_src_reg = TheISA::flattenIntIndex(inst->tcBase(), src_reg);
DPRINTF(Rename, "Flattening index %d to %d.\n", (int)src_reg, (int)flat_src_reg);
}
inst->flattenSrcReg(src_idx, flat_src_reg);
// Look up the source registers to get the phys. register they've
// been renamed to, and set the sources to those registers.
PhysRegIndex renamed_reg = renameMap[tid]->lookup(src_reg);
PhysRegIndex renamed_reg = renameMap[tid]->lookup(flat_src_reg);
DPRINTF(Rename, "[tid:%u]: Looking up arch reg %i, got "
"physical reg %i.\n", tid, (int)src_reg,
"physical reg %i.\n", tid, (int)flat_src_reg,
(int)renamed_reg);
inst->renameSrcReg(src_idx, renamed_reg);
@ -993,20 +1001,27 @@ DefaultRename<Impl>::renameDestRegs(DynInstPtr &inst,unsigned tid)
// Rename the destination registers.
for (int dest_idx = 0; dest_idx < num_dest_regs; dest_idx++) {
RegIndex dest_reg = inst->destRegIdx(dest_idx);
RegIndex flat_dest_reg = dest_reg;
if (dest_reg < TheISA::FP_Base_DepTag) {
flat_dest_reg = TheISA::flattenIntIndex(inst->tcBase(), dest_reg);
DPRINTF(Rename, "Flattening index %d to %d.\n", (int)dest_reg, (int)flat_dest_reg);
}
inst->flattenDestReg(dest_idx, flat_dest_reg);
// Get the physical register that the destination will be
// renamed to.
rename_result = renameMap[tid]->rename(dest_reg);
rename_result = renameMap[tid]->rename(flat_dest_reg);
//Mark Scoreboard entry as not ready
scoreboard->unsetReg(rename_result.first);
DPRINTF(Rename, "[tid:%u]: Renaming arch reg %i to physical "
"reg %i.\n", tid, (int)dest_reg,
"reg %i.\n", tid, (int)flat_dest_reg,
(int)rename_result.first);
// Record the rename information so that a history can be kept.
RenameHistory hb_entry(inst->seqNum, dest_reg,
RenameHistory hb_entry(inst->seqNum, flat_dest_reg,
rename_result.first,
rename_result.second);