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SPIRV-Tools/test
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Jaebaek Seo 089d716d25
Fix dangling phi bug from loop-unroll (#4239) 
Fix dangling phi bug from loop-unroll

When unrolling the following loop:
```
%const0 = OpConstant ...
%const1 = OpConstant ...
...
%LoopHeader = OpLabel
%phi0 = OpPhi %float %const0 %PreHeader %phi1 %Latch
%phi1 = OpPhi %float %const1 %PreHeader %x    %Latch
...
%LoopBody = OpLabel
%x = OpFSub %float %phi1 %phi0
...
```

the loop-unroll pass sets the value of `%phi0` as `%phi1` for the second
copy of the loop body. For example, the second copy of
`%x = OpFSub %float %phi1 %phi0` will be
`%y = OpFSub %float %x %phi1`.

Since all phi instructions for inductions will are removed after the
loop unrolling, `%phi1` will be a dead dangling phi.

It happens only for the phi values of the first loop iteration. Replacing those
dangling phis with their initial values fixes this issue.

For example, the second copy of `%x = OpFSub %float %phi1 %phi0` should be
`%y = OpFSub %float %x %const1` because the value of `%phi1` from the
first loop iteration is `%const1`.
2021-04-27 16:27:09 -04:00
..
fuzz spirv-fuzz: Swap positions of two functions in a module (#4236) 2021-04-27 12:33:08 +01:00
fuzzers Remove WebGPU support (#4108) 2021-01-14 16:45:18 -05:00
link Validate SPIRV Version number when parsing binary header (#3834) 2020-09-23 11:59:41 -04:00
opt Fix dangling phi bug from loop-unroll (#4239) 2021-04-27 16:27:09 -04:00
reduce spirv-reduce: Support reducing a specific function (#3774) 2020-09-11 06:29:43 +01:00
scripts Remove unneeded future imports (#2739) 2019-07-24 15:29:38 -04:00
tools Remove WebGPU support (#4108) 2021-01-14 16:45:18 -05:00
util Support constant-folding UConvert and SConvert (#2960) 2019-10-16 16:29:55 -04:00
val spriv-val: Fix clang-format bug for VUID string (#4238) 2021-04-16 08:52:48 -04:00
assembly_context_test.cpp Add descriptor array scalar replacement (#2742) 2019-08-08 10:53:19 -04:00
assembly_format_test.cpp Assembler: Can't set an ID in instruction without result ID (#2852) 2019-09-11 13:15:25 -04:00
binary_destroy_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
binary_endianness_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
binary_header_get_test.cpp Validate SPIRV Version number when parsing binary header (#3834) 2020-09-23 11:59:41 -04:00
binary_parse_test.cpp Fix -Wextra-semi-stmt -Wsuggest-destructor-override -Wdeprecated-copy-dtor (#4164) 2021-03-09 13:16:43 +00:00
binary_strnlen_s_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
binary_to_text_test.cpp Fix -Wextra-semi-stmt -Wsuggest-destructor-override -Wdeprecated-copy-dtor (#4164) 2021-03-09 13:16:43 +00:00
binary_to_text.literal_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
c_interface_test.cpp Assembler: Can't set an ID in instruction without result ID (#2852) 2019-09-11 13:15:25 -04:00
CMakeLists.txt CMake: Add SPIRV_TOOLS_BUILD_STATIC flag (#3910) 2020-10-29 09:25:26 -04:00
comment_test.cpp Add descriptor array scalar replacement (#2742) 2019-08-08 10:53:19 -04:00
cpp_interface_test.cpp [val] Fixup id name output (#2158) 2018-12-03 17:01:30 -05:00
diagnostic_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
enum_set_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
enum_string_mapping_test.cpp Add validation for SPV_EXT_shader_atomic_float_min_max (#4105) 2021-03-24 08:49:21 -04:00
ext_inst.cldebug100_test.cpp Support OpenCL.DebugInfo.100 extended instruction set (#3080) 2019-12-19 17:16:26 -05:00
ext_inst.debuginfo_test.cpp Add descriptor array scalar replacement (#2742) 2019-08-08 10:53:19 -04:00
ext_inst.glsl_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
ext_inst.non_semantic_test.cpp Add support for SPV_KHR_non_semantic_info (#3110) 2019-12-18 18:10:29 -05:00
ext_inst.opencl_test.cpp Add descriptor array scalar replacement (#2742) 2019-08-08 10:53:19 -04:00
fix_word_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
generator_magic_number_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
hex_float_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
immediate_int_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
libspirv_macros_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
log_test.cpp Remove source/message.h (#1838) 2018-08-14 15:41:21 -04:00
name_mapper_test.cpp Add gl_BaseInstance to the name mapper. (#3462) 2020-06-26 11:54:35 -05:00
named_id_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
opcode_make_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
opcode_require_capabilities_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
opcode_split_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
opcode_table_get_test.cpp Favour 'integrity' over 'coherence' as a replacement for 'sanity'. (#3619) 2020-09-10 09:52:21 -04:00
operand_capabilities_test.cpp Update MeshShadingNV dependencies (and land Ray tracing updates) (#4028) 2020-11-23 12:23:54 -05:00
operand_pattern_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
operand_test.cpp Avoid operand type range checks (#3379) 2020-07-27 13:14:03 -04:00
operand-class-test-coverage.csv Fix operand class test coverage table. 2016-09-23 11:58:25 -04:00
parse_number_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
pch_test.cpp Enable precompiled headers for spirv-tools(-shared) and some unit tests (#2026) 2018-11-06 09:26:23 -05:00
pch_test.h Enable precompiled headers for spirv-tools(-shared) and some unit tests (#2026) 2018-11-06 09:26:23 -05:00
preserve_numeric_ids_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
software_version_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
string_utils_test.cpp Move utils/ to spvtools::utils 2018-07-06 16:47:46 -04:00
target_env_test.cpp Remove WebGPU support (#4108) 2021-01-14 16:45:18 -05:00
test_fixture.h Fix -Wextra-semi-stmt -Wsuggest-destructor-override -Wdeprecated-copy-dtor (#4164) 2021-03-09 13:16:43 +00:00
text_advance_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
text_destroy_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
text_literal_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
text_start_new_inst_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
text_to_binary_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
text_to_binary.annotation_test.cpp Add descriptor array scalar replacement (#2742) 2019-08-08 10:53:19 -04:00
text_to_binary.barrier_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
text_to_binary.composite_test.cpp Support SPIR-V 1.4 (#2550) 2019-05-07 12:27:18 -04:00
text_to_binary.constant_test.cpp Fix round trip tests that weren't instantiated (#3417) 2020-06-10 11:11:46 -04:00
text_to_binary.control_flow_test.cpp Support SPV_KHR_terminate_invocation (#3568) 2020-07-22 11:45:02 -04:00
text_to_binary.debug_test.cpp Add descriptor array scalar replacement (#2742) 2019-08-08 10:53:19 -04:00
text_to_binary.device_side_enqueue_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
text_to_binary.extension_test.cpp Support SPV_KHR_linkonce_odr, SPV_KHR_expect_assume (#4161) 2021-03-16 09:51:59 -04:00
text_to_binary.function_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
text_to_binary.group_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
text_to_binary.image_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
text_to_binary.literal_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
text_to_binary.memory_test.cpp SPIRV-Tools support for SPIR-V 1.5 (#2865) 2019-09-13 14:59:02 -04:00
text_to_binary.misc_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
text_to_binary.mode_setting_test.cpp Add descriptor array scalar replacement (#2742) 2019-08-08 10:53:19 -04:00
text_to_binary.pipe_storage_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
text_to_binary.reserved_sampling_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
text_to_binary.subgroup_dispatch_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
text_to_binary.type_declaration_test.cpp Remove use of deprecated googletest macro (#2286) 2019-01-29 18:56:52 -05:00
text_word_get_test.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
timer_test.cpp Remove extra semis (#2717) 2019-07-08 15:07:36 -04:00
unit_spirv.cpp Fix round trip tests that weren't instantiated (#3417) 2020-06-10 11:11:46 -04:00
unit_spirv.h Remove WebGPU support (#4108) 2021-01-14 16:45:18 -05:00