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Revert "improve timings for S variants of multiply instructions on arm9"

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This reverts commit 789ef21c70.
This commit is contained in:
Jaklyy
2024-07-19 17:52:28 -04:00
parent 36f4f2c5d3
commit 13578a3cc9
2 changed files with 24 additions and 70 deletions
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13
src/ARM.h
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@ -272,23 +272,12 @@ public:
void AddCycles_CI(s32 numI) override
{
// code||internal
// code+internal
s32 numC = CodeCycles;
numI += 1;
Cycles += std::max(numC, numI);
}
void AddCycles_CIL(s32 numI, s32 numL)
{
// (code||internal)+forced interlock
// used by S variants of multiply instructions on the ARM9
// seems that instead of adding extra hardware logic to allow for handling the memory stage of the instructions during the execute stage
// it instead seems to force a two cycle interlock allowing for the interlocked cycle to be executed without any special logic + presumably an extra cycle to set flags
s32 numC = CodeCycles;
numI += 1;
Cycles += std::max(numC, numI) + numL;
}
void AddCycles_CDI_LDR() override;
void AddCycles_CDI_LDM() override;
void AddCycles_CDI_SWP() override { AddCycles_CD_STR(); } // uses the same behavior as str