frederik
/
oscar64
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix right + left shift optimization when shifting from long to int

This commit is contained in:
drmortalwombat 2023-01-13 15:41:21 +01:00
parent 7c11a5347c
commit fdb051bd2b
1 changed files with 43 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
oscar64/InterCode.cpp
View File

@ -12180,13 +12180,15 @@ void InterCodeBasicBlock::PeepholeOptimization(const GrowingVariableArray& stati
{
int shift = mInstructions[i + 0]->mSrc[0].mIntConst;
if (shift & 7)
{
int mshift = mInstructions[i + 1]->mSrc[0].mIntConst;
mInstructions[i + 0]->mOperator = IA_AND;
mInstructions[i + 0]->mSrc[0].mType = IT_INT16;
mInstructions[i + 0]->mSrc[0].mType = mInstructions[i + 1]->mSrc[0].mType;
switch (mInstructions[i + 0]->mSrc[0].mType)
switch (mInstructions[i + 0]->mSrc[1].mType)
{
case IT_INT8:
mInstructions[i + 0]->mSrc[0].mIntConst = (0xffu >> shift) << shift;
@ -12199,6 +12201,12 @@ void InterCodeBasicBlock::PeepholeOptimization(const GrowingVariableArray& stati
break;
}
if (shift > mshift && mInstructions[i + 0]->mDst.mType > mInstructions[i + 1]->mSrc[1].mType)
{
mInstructions[i + 1]->mSrc[1].mType = mInstructions[i + 0]->mDst.mType;
mInstructions[i + 1]->mDst.mType = mInstructions[i + 0]->mDst.mType;
}
if (shift > mshift)
{
mInstructions[i + 1]->mOperator = IA_SHR;
@ -12218,6 +12226,7 @@ void InterCodeBasicBlock::PeepholeOptimization(const GrowingVariableArray& stati
changed = true;
}
}
#endif
#if 1
else if (