On 06/09/2012 01:58 AM, Mike Stump wrote:
On Jun 8, 2012, at 4:11 PM, Mike Stump wrote:
On Apr 17, 2012, at 2:08 PM, Bernd Schmidt wrote:
This patch enables GET_MODE_WIDER_MODE for MODE_PARTIAL_INT (by setting
the wider mode to the one the partial mode is based on), which is useful
for the port I'm working on: I can avoid defining operations on the
partial modes.
I think this breaks my port, in emit-rtl.c:
B for (mode = GET_CLASS_NARROWEST_MODE (MODE_PARTIAL_INT);
mode != VOIDmode;
mode = GET_MODE_WIDER_MODE (mode))
=> const_tiny_rtx[i][(int) mode] = GEN_INT (i);
Doesn't work, as that does expects to step through all partial int modes. The
problem is, we went from P1QI -> P1SI, and now we go from P1QI to QI. The
problem is this, we never initialize P1SI anymore, and later, when initializing
vector constants, things like V2P1SI dies, as P1SI was never built:
So, maybe we want to go through all modes, and just ask, are you a
MODE_PARTIAL_INT, and initialize them that way? Thoughts?
The below patch allows my port to at least initialize once more... Thoughts?
Ok?
Looks good to me.
Bernd
