6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-13 09:33:50 +00:00
Code Issues Projects Releases Wiki Activity

Though the previous xform applies to literally dozens (hundreds?) of variables

Browse Source 
in SPEC, the subsequent optimziations that we are after don't play with
with FP values, so disable this xform for them.  Really we just don't want
stuff like:

double G;   (always 0 or 412312.312)
  = G;

turning into:

bool G_b;
  = G_b ? 412312.312 : 0;

We'd rather just do the load.

-Chris


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18819 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-12-12 06:03:06 +00:00
parent 6a8c46cde3
commit 077f1a8292
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
lib/Transforms/IPO/GlobalOpt.cpp
View File

@ -954,7 +954,8 @@ bool GlobalOpt::ProcessInternalGlobal(GlobalVariable *GV,
// Otherwise, if the global was not a boolean, we can shrink it to be a
// boolean.
if (Constant *SOVConstant = dyn_cast<Constant>(GS.StoredOnceValue))
if (GV->getType()->getElementType() != Type::BoolTy) {
if (GV->getType()->getElementType() != Type::BoolTy &&
!GV->getType()->getElementType()->isFloatingPoint()) {
DEBUG(std::cerr << " *** SHRINKING TO BOOL: " << *GV);
ShrinkGlobalToBoolean(GV, SOVConstant);
++NumShrunkToBool;