Teach the SelectionDAG code how to expand and promote it
Have PPC32 LowerCallTo generate ISD::UNDEF for int arg regs used up by fp
arguments, but not shadowing their value. This allows us to do the right
thing with both fixed and vararg floating point arguments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20988 91177308-0d34-0410-b5e6-96231b3b80d8
18.8 to 14.8 seconds. The Pattern ISel is now often faster than the
Simple ISel, esp. on memory intensive code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20973 91177308-0d34-0410-b5e6-96231b3b80d8
generate compare immediate for integer compare with constant
fold setcc into branch
fold setcc into select
Code generation quality for Shootout is now on par with the Simple ISel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20968 91177308-0d34-0410-b5e6-96231b3b80d8
LowerCallTo.
Handle ISD::ADD in SelectAddr, allowing us to have nonzero immediates for
loads and stores, amazing!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20946 91177308-0d34-0410-b5e6-96231b3b80d8
Tell the SelectionDAG ISel to expand SEXTLOAD of i1 and i8, rather than
complicate the code in ISD::SEXTLOAD to do it by hand
Combine the FP and Int ISD::LOAD codegen
Generate better code for constant pool loads
As a result, all of Shootout, and likely many other programs are now
working.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20945 91177308-0d34-0410-b5e6-96231b3b80d8
don't support things like memcpy directly. This allows a handful of the
Shootout programs to work, yay!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20939 91177308-0d34-0410-b5e6-96231b3b80d8
the correct register class. Also remove the loading of float data into int
regs part of varargs; it will need to be implemented differently later.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20857 91177308-0d34-0410-b5e6-96231b3b80d8
going on with copies between floating point and integer register files
being generated. Once that is solved, varargs will be done.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20856 91177308-0d34-0410-b5e6-96231b3b80d8
handled correctly for floating point arguments, or more than 8 arguemnts.
This does however, allow hello world to run.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20832 91177308-0d34-0410-b5e6-96231b3b80d8
1) dynamic stack alloc
2) loads
3) shifts
4) subtract
5) immediate form of add, and, or, xor
6) change flag from -pattern-isel to -enable-ppc-pattern-isel
Remove dead arguments from getGlobalBaseReg in the simple ISel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20810 91177308-0d34-0410-b5e6-96231b3b80d8
be brought up to parity with the current simple ISel in the coming days.
Currently, -pattern-isel is required to trigger it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20805 91177308-0d34-0410-b5e6-96231b3b80d8
using Function::arg_{iterator|begin|end}. Likewise Module::g* -> Module::global_*.
This patch is contributed by Gabor Greif, thanks!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20597 91177308-0d34-0410-b5e6-96231b3b80d8
to save and restore the LR register on entry and exit of a leaf function
that needed to access globals or the constant pool. This should hopefully
fix oscar from sending the PPC tester spinning out of control.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20197 91177308-0d34-0410-b5e6-96231b3b80d8
- unsigned TrueValue = getReg(TrueVal, BB, BB->begin());
+ unsigned TrueValue = getReg(TrueVal);
Fixes the PPC regressions from last night.
The other hunk is just a clarity improvement.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19263 91177308-0d34-0410-b5e6-96231b3b80d8
While we're at it, improve codegen of select instructions. For this
testcase:
int %test(bool %C, int %A, int %B) {
%D = select bool %C, int %A, int %B
ret int %D
}
We used to generate this code:
_test:
cmpwi cr0, r3, 0
bne .LBB_test_2 ;
.LBB_test_1: ;
b .LBB_test_3 ;
.LBB_test_2: ;
or r5, r4, r4
.LBB_test_3: ;
or r3, r5, r5
blr
Now we emit:
_test:
cmpwi cr0, r3, 0
bne .LBB_test_2 ;
.LBB_test_1: ;
or r4, r5, r5
.LBB_test_2: ;
or r3, r4, r4
blr
-Chris
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19214 91177308-0d34-0410-b5e6-96231b3b80d8
