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Diffstat (limited to 'lib/hipe/x86/TODO')
| -rw-r--r-- | lib/hipe/x86/TODO | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/hipe/x86/TODO b/lib/hipe/x86/TODO new file mode 100644 index 0000000000..7c93f7daf3 --- /dev/null +++ b/lib/hipe/x86/TODO @@ -0,0 +1,31 @@ +rtl_to_x86: +* recognise alub(X,X,sub,1,lt,L1,L2,P) and turn it into 'dec', + this might improve the reduction test code slightly (X is + the pseudo for FCALLS) +* recognise alu(Z,X,add,Y) and turn it into 'lea'. +* rewrite tailcalls as parallel assignments before regalloc + +x86: +* Use separate constructors for real regs (x86_reg) and pseudos (x86_temp). + +Frame: +* drop tailcall rewrite + +Registers: +* make the 2 regs now reserved for frame's tailcall rewrite available for arg passing + +Optimizations: +* replace jcc cc,L1; jmp L0; L1: with jcc <not cc> L0; L1: (length:len/2) +* Kill move X,X insns, either in frame or finalise +* Instruction scheduling module +* We can now choose to not have HP in %esi. However, this currently loses + performance due to (a) repeated moves to/from P_HP(P), and (b) spills of + the temp that contains a copy of P_HP(P). Both of these problems should be + fixed, and then, if we don't have any noticeable performance degradation, we + should permanently change to a non-reserved HP strategy. + +Loader: + +Assembler: + +Encode: |