llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-10 02:36:06 +00:00

History

Nate Begeman 56eb86806d Add support for AssertSext and AssertZext, folding other extensions with

them.  This allows for elminination of redundant extends in the entry
blocks of functions on PowerPC.

Add support for i32 x i32 -> i64 multiplies, by recognizing when the inputs
to ISD::MUL in ExpandOp are actually just extended i32 values and not real
i64 values.  this allows us to codegen

int mulhs(int a, int b) { return ((long long)a * b) >> 32; }
as:
_mulhs:
        mulhw r3, r4, r3
        blr

instead of:
_mulhs:
        mulhwu r2, r4, r3
        srawi r5, r3, 31
        mullw r5, r4, r5
        add r2, r2, r5
        srawi r4, r4, 31
        mullw r3, r4, r3
        add r3, r2, r3
        blr

with a similar improvement on x86.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23147 91177308-0d34-0410-b5e6-96231b3b80d8

2005-08-30 02:44:00 +00:00

SelectionDAG

Add support for AssertSext and AssertZext, folding other extensions with

2005-08-30 02:44:00 +00:00

AsmPrinter.cpp

Culling out use of unions for converting FP to bits and vice versa.

2005-08-17 19:34:49 +00:00

BranchFolding.cpp

…

ELFWriter.cpp

Fix VC++ constant truncation warning.

2005-08-19 16:19:21 +00:00