6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-14 17:34:41 +00:00
Code Issues Projects Releases Wiki Activity

Remove conversion of fp-to-uint cast into a multi-step cast:

Browse Source 
this is not an optional transformation on SPARC and is now handled
directly by instruction selection.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7644 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve 2003-08-06 18:42:49 +00:00
parent 51a754ebd9
commit 5ac1175ada
1 changed files with 0 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
lib/Target/SparcV9/SparcV9PreSelection.cpp
View File

@ -144,7 +144,6 @@ namespace {
// These methods do the actual work of specializing code
void visitInstruction(Instruction &I); // common work for every instr.
void visitGetElementPtrInst(GetElementPtrInst &I);
void visitCastInst(CastInst &I);
void visitCallInst(CallInst &I);
// Helper functions for visiting operands of every instruction
@ -341,34 +340,6 @@ PreSelection::visitGetElementPtrInst(GetElementPtrInst &I)
}
// Cast instructions:
// -- make multi-step casts explicit:
// -- float/double to uint32_t:
// If target does not have a float-to-unsigned instruction, we
// need to convert to uint64_t and then to uint32_t, or we may
// overflow the signed int representation for legal uint32_t
// values. Expand this without checking target.
// -- other common transformations on operands
//
void
PreSelection::visitCastInst(CastInst &I)
{
CastInst* castI = NULL;
// Check for a global and put its address into a register before this instr
if (I.getType() == Type::UIntTy &&
I.getOperand(0)->getType()->isFloatingPoint()) {
// insert a cast-fp-to-long before I, and then replace the operand of I
castI = new CastInst(I.getOperand(0), Type::LongTy, "fp2Long2Uint", &I);
I.setOperand(0, castI); // replace fp operand with long
}
// Perform other transformations common to all instructions
visitInstruction(I);
if (castI)
visitInstruction(*castI);
}
void
PreSelection::visitCallInst(CallInst &I)
{