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d800bbbac9
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Steven Perron d800bbbac9
Handle back edges better in dead branch elim. (#2417) 
* Handle back edges better in dead branch elim.

Loop header must have exactly one back edge.  Sometimes the branch
with the back edge can be folded.  However, it should not be folded
if it removes the back edge.

The code to check this simply avoids folding the branch in the
continue block.  That needs to be changed to not fold the back edge,
wherever it is.

At the same time, the branch can be folded if it folds to a branch to
the header, because the back edge will still exist.

Fixes #2391.
2019-02-26 09:06:51 -05:00
..
comp Use MakeUnique. (#1837) 2018-08-14 15:01:50 -04:00
link Move make_unique to source/util. (#1836) 2018-08-14 12:44:54 -04:00
opt Handle back edges better in dead branch elim. (#2417) 2019-02-26 09:06:51 -05:00
reduce Fix merge blocks opportunity to check if still enabled (#2370) 2019-02-11 16:26:37 -05:00
util Change HexFloat to work with gcc8. (#2109) 2018-11-26 15:47:48 -05:00
val Add validation for SPV_NV_cooperative_matrix (#2404) 2019-02-25 17:43:11 -05:00
assembly_grammar.cpp Add validation for SPV_NV_cooperative_matrix (#2404) 2019-02-25 17:43:11 -05:00
assembly_grammar.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
binary.cpp Output disassembly line number for binary parse errors. (#2195) 2018-12-21 16:24:15 -05:00
binary.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
cfa.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
CMakeLists.txt Fixed undefined reference to 'clock_gettime' by linking rt library (#2409) 2019-02-25 08:57:34 -05:00
diagnostic.cpp Remove source/message.h (#1838) 2018-08-14 15:41:21 -04:00
diagnostic.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
disassemble.cpp Use MakeUnique. (#1837) 2018-08-14 15:01:50 -04:00
disassemble.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
enum_set.h Use MakeUnique. (#1837) 2018-08-14 15:01:50 -04:00
enum_string_mapping.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
enum_string_mapping.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
ext_inst.cpp Remove asserts around environment determination. (#2040) 2018-11-12 14:24:47 -05:00
ext_inst.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
extensions.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
extensions.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
extinst.debuginfo.grammar.json Add asm, dis support for DebugInfo extended instruction set 2017-12-22 09:39:36 -05:00
extinst.spv-amd-gcn-shader.grammar.json Fix spelling in SPV_AMD_gcn_shader support 2017-04-03 14:59:18 -04:00
extinst.spv-amd-shader-ballot.grammar.json Add support for SPV AMD extensions 2017-06-21 15:08:07 -04:00
extinst.spv-amd-shader-explicit-vertex-parameter.grammar.json Add support for SPV AMD extensions 2017-06-21 15:08:07 -04:00
extinst.spv-amd-shader-trinary-minmax.grammar.json Add support for SPV AMD extensions 2017-06-21 15:08:07 -04:00
id_descriptor.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
id_descriptor.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
instruction.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
latest_version_glsl_std_450_header.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
latest_version_opencl_std_header.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
latest_version_spirv_header.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
libspirv.cpp Add SpirvTools::IsValid(). (#2326) 2019-01-24 09:45:09 -05:00
macro.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
name_mapper.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
name_mapper.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
opcode.cpp Add validation for SPV_NV_cooperative_matrix (#2404) 2019-02-25 17:43:11 -05:00
opcode.h Validate that debugging instructions are not present for WebGPU (#2089) 2018-11-20 16:12:28 -05:00
operand.cpp SPV_EXT_physical_storage_buffer (#2267) 2019-01-07 13:19:24 -05:00
operand.h New spirv-reduce reduction pass: operand to dominating id. (#2099) 2018-11-26 17:06:21 -05:00
parsed_operand.cpp Replace asserts with returns 2018-08-08 15:13:04 -04:00
parsed_operand.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
pch_source.cpp Enable precompiled headers for spirv-tools(-shared) and some unit tests (#2026) 2018-11-06 09:26:23 -05:00
pch_source.h Enable precompiled headers for spirv-tools(-shared) and some unit tests (#2026) 2018-11-06 09:26:23 -05:00
print.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
print.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
software_version.cpp Add missing function parameters in libspirv.h 2018-04-03 10:10:43 -04:00
spirv_constant.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
spirv_definition.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
spirv_endian.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
spirv_endian.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
spirv_optimizer_options.cpp Add explicit void parameter in libspirv.h again (#2032) 2018-11-06 11:12:26 -05:00
spirv_optimizer_options.h Add option for the max id bound. (#1870) 2018-09-10 11:49:41 -04:00
spirv_reducer_options.cpp Initial commit for spirv-reduce. (#2056) 2018-11-21 14:03:09 -05:00
spirv_reducer_options.h Initial commit for spirv-reduce. (#2056) 2018-11-21 14:03:09 -05:00
spirv_target_env.cpp Add helper for 'is Vulkan or WebGPU' (#2324) 2019-01-23 13:07:03 -05:00
spirv_target_env.h Make spvParseTargetEnv public (#2362) 2019-02-07 14:49:15 -05:00
spirv_validator_options.cpp Validator: Support VK_EXT_scalar_block_layout 2018-11-16 15:55:30 -05:00
spirv_validator_options.h Validator: Support VK_EXT_scalar_block_layout 2018-11-16 15:55:30 -05:00
table.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
table.h Remove source/message.h (#1838) 2018-08-14 15:41:21 -04:00
text_handler.cpp Avoid GCC8 warning in text_handler.cpp. (#2197) 2018-12-13 15:03:28 -05:00
text_handler.h Remove source/message.h (#1838) 2018-08-14 15:41:21 -04:00
text.cpp Remove source/message.h (#1838) 2018-08-14 15:41:21 -04:00
text.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00