too large limit.
The function would return immediately when finding an addrmode 3/5 instruction.
It needs to keep scanning in case there is an addrmode 6 instruction which drops
the limit to 0.
A test case is very difficult to produce because it will only fail when the
scavenger is used.
rdar://problem/7894847
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103995 91177308-0d34-0410-b5e6-96231b3b80d8
- Change the logic DisableFramePointerElim() to check for the
-disable-non-leaf-fp-elim before -disable-fp-elim.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103990 91177308-0d34-0410-b5e6-96231b3b80d8
- Of questionable utility, since in general anything which wants to do this should probably be within a target specific hook, which can rely on the sections being of the appropriate type. However, it can be useful for short term hacks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103980 91177308-0d34-0410-b5e6-96231b3b80d8
- This fixes a string table mismatch with 'as' when two new symbols are defined
in a single instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103979 91177308-0d34-0410-b5e6-96231b3b80d8
This fixes the miscompilations of MultiSource/Applications/JM/l{en,de}cod.
Clang now successfully self hosts in a debug build with the fast register allocator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103975 91177308-0d34-0410-b5e6-96231b3b80d8
- Don't clear weak reference flag, 'as' was only "trying" to do this, it wasn't
actually succeeding.
- Clear the "lazy bound" bit when we mark something external. This corresponds
roughly to the lazy clearing of the bit that 'as' implements in
symbol_table_lookup.
- The exact meaning of these flags appears pretty loose, since 'as' isn't very
consistent. For now we just try to match 'as', we will clean this up one day
hopefully.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103964 91177308-0d34-0410-b5e6-96231b3b80d8
variable has not yet been used in an expression. This allows us to support a few
cases that show up in real code (mostly because gcc generates it for Objective-C
on Darwin), without giving up a reasonable semantic model for assignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103950 91177308-0d34-0410-b5e6-96231b3b80d8
While that approach works wonders for register pressure, it tends to break
everything.
This should unbreak the arm-linux builder and fix a number of miscompilations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103946 91177308-0d34-0410-b5e6-96231b3b80d8
out aliases when allocating. Clean up allocVirtReg().
Use calcSpillCost() to allow more aggressive hinting. Now the hint is always
taken unless blocked by a reserved register. This leads to more coalescing,
lower register pressure, and less spilling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103939 91177308-0d34-0410-b5e6-96231b3b80d8
This is safe to do because the physreg has been marked UsedInInstr and the kill flag will be set on the last operand using the virtreg if there are more then one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103933 91177308-0d34-0410-b5e6-96231b3b80d8
Debug code doesn't use callee saved registers anyway, and the code is simpler this way. Now spillVirtReg always kills, and the isKill parameter is not needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103927 91177308-0d34-0410-b5e6-96231b3b80d8
<1xi64> -> i64 to work in MMX registers on hosts where -no-sse
is the default (not mine). The right thing is
to accept this and make i64->f64 conversions go through memory,
but I don't have time right now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103914 91177308-0d34-0410-b5e6-96231b3b80d8
(This worked as of about 6 months ago and I didn't track down
exactly what broke it; I think this fix is appropriate.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103911 91177308-0d34-0410-b5e6-96231b3b80d8
