Displaying 3 results from an estimated 3 matches for "a0h".
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2012 Feb 16
1
[LLVMdev] LLVM: MachineCopyPropagation.cpp
Hi,
I have the following code:
%a1<def> = COPY %a0<kill>
...
%a0h<def> = COPY %a1l
, as input to MachineCopyPropagation.
The second copy is illegally erased! This is wrong, because it is the low part of a1 that is copied to the high part of a0.
At a first glance, it seems that
if (!ReservedRegs.test(Def) &&
(!ReservedRegs.test(Src) || NoIn...
2012 Jan 24
1
[LLVMdev] Req-sequence, partial defs
...%vreg20 hi16:%vreg2 lo16:%vreg43
Becomes
16L %vreg20:hi16<def,undef> = COPY %a2h<kill>, %vreg20<imp-def>; reg32:%vreg20
368L %vreg20:lo16<def> = mov 0, pred:0, pred:%noreg, %ac0<imp-use>, %ac1<imp-use>; reg32:%vreg20
Becomes
Live Ins: %a0h %a1_32 %a2h %a3_32
... (COPY coalesced as a2h is live in)
%a2l<def> = mov 0, pred:0, pred:%noreg, %ac0<imp-use>, %ac1<imp-use>, %a2_32<imp-use>
results in:
** Bad machine code: Using an undefined physical register ***
- function: lfixedconv8
- basic bloc...
2001 Dec 17
2
Traffic shapping + routing in RH 7.1
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