[llvm] [AMDGPU] Add custom lowering of llvm.convert.from.arbitrary.fp for FP8 (PR #194144)

[via llvm-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Windows-->
# :window: Windows x64 Test Results

* 134126 tests passed
* 3223 tests skipped
* 1 test failed

## Failed Tests
(click on a test name to see its output)

### LLVM
<details>
<summary>LLVM.TableGen/GlobalISelEmitter/GlobalISelEmitter.td</summary>

```
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
c:\_work\llvm-project\llvm-project\build\bin\llvm-tblgen.exe -gen-global-isel -I C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../../../include -I C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../Common -optimize-match-table=false C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter\GlobalISelEmitter.td -o C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.non-optimized.cpp
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\llvm-tblgen.exe' -gen-global-isel -I 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../../../include' -I 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../Common' -optimize-match-table=false 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter\GlobalISelEmitter.td' -o 'C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.non-optimized.cpp'
# note: command had no output on stdout or stderr
# RUN: at line 2
c:\_work\llvm-project\llvm-project\build\bin\llvm-tblgen.exe -gen-global-isel -I C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../../../include -I C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../Common -optimize-match-table=true  C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter\GlobalISelEmitter.td -o C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.optimized.cpp
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\llvm-tblgen.exe' -gen-global-isel -I 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../../../include' -I 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../Common' -optimize-match-table=true 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter\GlobalISelEmitter.td' -o 'C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.optimized.cpp'
# note: command had no output on stdout or stderr
# RUN: at line 3
c:\_work\llvm-project\llvm-project\build\bin\llvm-tblgen.exe -gen-global-isel -I C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../../../include -I C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../Common C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter\GlobalISelEmitter.td -o C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.default.cpp
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\llvm-tblgen.exe' -gen-global-isel -I 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../../../include' -I 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../Common' 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter\GlobalISelEmitter.td' -o 'C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.default.cpp'
# note: command had no output on stdout or stderr
# RUN: at line 4
c:\_work\llvm-project\llvm-project\build\bin\llvm-tblgen.exe -gen-global-isel -I C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../../../include -I C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../Common -gisel-extended-llt  C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter\GlobalISelEmitter.td -o C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.extended-llt.cpp
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\llvm-tblgen.exe' -gen-global-isel -I 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../../../include' -I 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter/../Common' -gisel-extended-llt 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter\GlobalISelEmitter.td' -o 'C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.extended-llt.cpp'
# note: command had no output on stdout or stderr
# RUN: at line 6
c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter\GlobalISelEmitter.td --check-prefixes=CHECK,R19C,R19N -input-file=C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.non-optimized.cpp
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe' 'C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter\GlobalISelEmitter.td' --check-prefixes=CHECK,R19C,R19N '-input-file=C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.non-optimized.cpp'
# .---command stderr------------
# | C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter\GlobalISelEmitter.td:213:16: error: CHECK-NEXT: is not on the line after the previous match
# | // CHECK-NEXT: return Imm == APFloatBase::S_Float8E4M3FN;
# |                ^
# | C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.non-optimized.cpp:168:2: note: 'next' match was here
# |  return Imm == APFloatBase::S_Float8E4M3FN;
# |  ^
# | C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.non-optimized.cpp:166:46: note: previous match ended here
# |  case GICXXPred_I64_Predicate_Float8E4M3FN: {
# |                                              ^
# | C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.non-optimized.cpp:167:1: note: non-matching line after previous match is here
# |  
# | ^
# | 
# | Input file: C:\_work\llvm-project\llvm-project\build\test\TableGen\GlobalISelEmitter\Output\GlobalISelEmitter.td.tmp.non-optimized.cpp
# | Check file: C:\_work\llvm-project\llvm-project\llvm\test\TableGen\GlobalISelEmitter\GlobalISelEmitter.td
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |           .
# |           .
# |           .
# |         163: }; 
# |         164: bool MyTargetInstructionSelector::testImmPredicate_I64(unsigned PredicateID, int64_t Imm) const { 
# |         165:  switch (PredicateID) { 
# |         166:  case GICXXPred_I64_Predicate_Float8E4M3FN: { 
# |         167:   
# |         168:  return Imm == APFloatBase::S_Float8E4M3FN; 
# | next:213      !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  error: match on wrong line
# |         169:   
# |         170:  } 
# |         171:  case GICXXPred_I64_Predicate_Float8E5M2: { 
# |         172:   
# |         173:  return Imm == APFloatBase::S_Float8E5M2; 
# |           .
# |           .
# |           .
# | >>>>>>
# `-----------------------------
# error: command failed with exit status: 1

--

```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/194144