On 12/04/2011 01:27 PM, Richard Sandiford wrote:
OK, here it is. As well as switching to the backward scan and incremental
liveness updates, I added a test for another case that I stumbled over:
/* Reject targets of abnormal edges. This is needed for correctness
on ports like Alpha
Richard Sandiford rdsandif...@googlemail.com writes:
Richard Sandiford rdsandif...@googlemail.com writes:
Bernd Schmidt ber...@codesourcery.com writes:
The reason I'm suddenly reviewing the code now is that it
doesn't prevent shrink-wrapping, because nothing adds register 2
to the liveness
On Wed, Oct 5, 2011 at 1:48 PM, Bernd Schmidt ber...@codesourcery.com wrote:
This adds a little mini-pass to shrink-wrapping, to eliminate a common
case that often makes shrink-wrapping unavailable. If a move insn copies
an argument registers to a call-saved register, the prologue must be
Bernd Schmidt ber...@codesourcery.com writes:
On 11/29/11 20:02, Richard Sandiford wrote:
Bernd Schmidt ber...@codesourcery.com writes:
The reason I'm suddenly reviewing the code now is that it
doesn't prevent shrink-wrapping, because nothing adds register 2
to the liveness info of the
On 11/26/11 12:50, Richard Sandiford wrote:
Could we use DF_REF_USES/DEFS here instead?
I suppose we could, but I can't really get excited about it...
Also:
+/* Look for sets of call-saved registers in the first block of the
+ function, and move them down into successor blocks if the
Bernd Schmidt ber...@codesourcery.com writes:
The reason I'm suddenly reviewing the code now is that it
doesn't prevent shrink-wrapping, because nothing adds register 2
to the liveness info of the affected blocks. The temporary prologue
value of register 2 is then moved into register 15.
Richard Sandiford rdsandif...@googlemail.com writes:
Bernd Schmidt ber...@codesourcery.com writes:
The reason I'm suddenly reviewing the code now is that it
doesn't prevent shrink-wrapping, because nothing adds register 2
to the liveness info of the affected blocks. The temporary prologue
On 11/29/11 20:02, Richard Sandiford wrote:
Bernd Schmidt ber...@codesourcery.com writes:
The reason I'm suddenly reviewing the code now is that it
doesn't prevent shrink-wrapping, because nothing adds register 2
to the liveness info of the affected blocks. The temporary prologue
value of
Bernd Schmidt ber...@codesourcery.com writes:
+ CLEAR_HARD_REG_SET (set_regs);
+ note_stores (PATTERN (scan), record_hard_reg_sets,
+set_regs);
+ if (CALL_P (scan))
+ IOR_HARD_REG_SET (set_regs,
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On 10/05/11 14:48, Bernd Schmidt wrote:
This adds a little mini-pass to shrink-wrapping, to eliminate a
common case that often makes shrink-wrapping unavailable. If a move
insn copies an argument registers to a call-saved register, the
prologue
This adds a little mini-pass to shrink-wrapping, to eliminate a common
case that often makes shrink-wrapping unavailable. If a move insn copies
an argument registers to a call-saved register, the prologue must be
emitted before this insn. We should therefore try to delay such moves
for as long as
On Wed, Oct 5, 2011 at 10:48 PM, Bernd Schmidt ber...@codesourcery.com wrote:
Bootstrapped and tested on i686-linux. Ok?
+/* Return true if BB has any active insns. */
+static bool
+bb_active_p (basic_block bb)
+{
+ rtx label;
+
+ /* Test whether there are active instructions in the
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