Hi Rainer,
Thanks for reporting, I was actually expecting these! I thought about
pre-empting them by using a positive filter on the tests for aarch64 and
x86_64 as I knew those would pass, but I thought it would be better to
let other targets report failures since then you get a testsuite that
covers more targets than just what I'm able to check.
Are there any sparc architectures that would support these or should I
just xfail sparc*-*-* ?
For instance: I also saw PR107240 for which one of the write tests fails
on Power 7 BE. I'm suggesting adding an xfail for that one
Kind regards,
Andre
On 13/10/2022 12:39, Rainer Orth wrote:
Hi Andre,
The bitposition calculation for the bitfield lowering in loop if conversion
was not
taking DECL_FIELD_OFFSET into account, which meant that it would result in
wrong bitpositions for bitfields that did not end up having representations
starting at the beginning of the struct.
Bootstrappend and regression tested on aarch64-none-linux-gnu and
x86_64-pc-linux-gnu.
I tried this patch together with the one for PR tree-optimization/107226
on sparc-sun-solaris2.11 to check if it cures the bootstrap failure
reported in PR tree-optimization/107232. While this restores bootstrap,
several of the new tests FAIL:
+FAIL: gcc.dg/vect/vect-bitfield-read-1.c -flto -ffat-lto-objects scan-tree-dump-times
vect "vectorized 1 loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-read-1.c scan-tree-dump-times vect "vectorized 1
loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-read-2.c -flto -ffat-lto-objects scan-tree-dump-times
vect "vectorized 1 loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-read-2.c scan-tree-dump-times vect "vectorized 1
loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-read-3.c -flto -ffat-lto-objects scan-tree-dump-times
vect "vectorized 2 loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-read-3.c scan-tree-dump-times vect "vectorized 2
loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-read-4.c -flto -ffat-lto-objects scan-tree-dump-times
vect "vectorized 1 loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-read-4.c scan-tree-dump-times vect "vectorized 1
loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-read-6.c -flto -ffat-lto-objects scan-tree-dump-times
vect "vectorized 1 loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-write-1.c -flto -ffat-lto-objects scan-tree-dump-times
vect "vectorized 1 loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-write-1.c scan-tree-dump-times vect "vectorized 1
loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-write-2.c -flto -ffat-lto-objects scan-tree-dump-times
vect "vectorized 1 loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-write-2.c scan-tree-dump-times vect "vectorized 1
loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-write-3.c -flto -ffat-lto-objects scan-tree-dump-times
vect "vectorized 1 loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-write-3.c scan-tree-dump-times vect "vectorized 1
loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-write-5.c -flto -ffat-lto-objects scan-tree-dump-times
vect "vectorized 1 loops" 1
+FAIL: gcc.dg/vect/vect-bitfield-write-5.c scan-tree-dump-times vect "vectorized 1
loops" 1
For vect-bitfield-read-1.c, the dump has
gcc.dg/vect/vect-bitfield-read-1.c:25:23: note: ==> examining pattern def
statement: patt_31 = patt_30 >> 1;
gcc.dg/vect/vect-bitfield-read-1.c:25:23: note: ==> examining statement: patt_31 =
patt_30 >> 1;
gcc.dg/vect/vect-bitfield-read-1.c:25:23: note: vect_is_simple_use: operand
_ifc__27 & 4294967294, type of def: internal
gcc.dg/vect/vect-bitfield-read-1.c:25:23: note: vect_is_simple_use: vectype
vector(2) unsigned int
gcc.dg/vect/vect-bitfield-read-1.c:25:23: note: vect_is_simple_use: operand
1, type of def: constant
gcc.dg/vect/vect-bitfield-read-1.c:25:23: missed: op not supported by target.
gcc.dg/vect/vect-bitfield-read-1.c:23:1: missed: not vectorized: relevant stmt not
supported: patt_31 = patt_30 >> 1;
gcc.dg/vect/vect-bitfield-read-1.c:25:23: missed: bad operation or unsupported
loop bound.
gcc.dg/vect/vect-bitfield-read-1.c:25:23: note: ***** Analysis failed with
vector mode V2SI
Rainer
