On Sat, 13 Dec 2014 22:26:00 +0100, Jason Ekstrand <[email protected]>
wrote:
This short little series adds a folder and 3 tests for problems that may
arise if your compiler translates to/from SSA form incorrectly. The
first
two are just the classic "swap" and "lost copy" problems that you can
find
in any out-of-SSA paper. The third is a strange edge-case in into-SSA
translation that Connor Abbot pointed out to me on IRC last night.
I put these tests in their own folder because, while they are just
compiler
tests, they are fairly specific to SSA form. We probably want more SSA
tests, but most of the other SSA bugs I've seen are already covered in a
reasonably minimal way by control flow that happens all the time in
piglit.
Jason Ekstrand (3):
ssa: Add a test for the classic "swap problem" in out-of-SSA
translation
ssa: Add a test for the classic "lost copy problem" in out-of-SSA
translation
ssa: Add a test for an edge case in into-SSA translation
tests/shaders/ssa/fs-if-def-else-break.shader_test | 30
++++++++++++++++++++++
tests/shaders/ssa/fs-lost-copy-problem.shader_test | 23
+++++++++++++++++
tests/shaders/ssa/fs-swap-problem.shader_test | 19 ++++++++++++++
3 files changed, 72 insertions(+)
create mode 100644 tests/shaders/ssa/fs-if-def-else-break.shader_test
create mode 100644 tests/shaders/ssa/fs-lost-copy-problem.shader_test
create mode 100644 tests/shaders/ssa/fs-swap-problem.shader_test
Test 3 triggers the same kind of bug in SB so its definitely a worthwhile
test case.
Series is
Reviewed-By: Glenn Kennard <[email protected]>
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