[llvm] [DAG] computeKnownFPClass - add ISD::SINT_TO_FP/UINT_TO_FP handling (PR #190539)

[via llvm-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Linux-->
# :penguin: Linux x64 Test Results

* 173891 tests passed
* 3302 tests skipped
* 1 test failed

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

### LLVM
<details>
<summary>LLVM.CodeGen/RISCV/combine-is_fpclass.ll</summary>

```
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 2
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/llc -mtriple=riscv64 -mattr=+v,+f,+d < /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/combine-is_fpclass.ll | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/combine-is_fpclass.ll
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/llc -mtriple=riscv64 -mattr=+v,+f,+d
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/combine-is_fpclass.ll
# .---command stderr------------
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/combine-is_fpclass.ll:202:15: error: CHECK-NEXT: expected string not found in input
# | ; CHECK-NEXT: li a0, 0
# |               ^
# | <stdin>:188:9: note: scanning from here
# | # %bb.0:
# |         ^
# | <stdin>:191:4: note: possible intended match here
# |  slli a0, a0, 59
# |    ^
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/combine-is_fpclass.ll:264:15: error: CHECK-NEXT: expected string not found in input
# | ; CHECK-NEXT: vsetivli zero, 4, e8, mf4, ta, ma
# |               ^
# | <stdin>:264:9: note: scanning from here
# | # %bb.0:
# |         ^
# | <stdin>:265:2: note: possible intended match here
# |  vsetivli zero, 4, e32, m1, ta, ma
# |  ^
# | 
# | Input file: <stdin>
# | Check file: /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/combine-is_fpclass.ll
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |             .
# |             .
# |             .
# |           183:  .globl uitofp_is_nan_neg_zero_subnorm # -- Begin function uitofp_is_nan_neg_zero_subnorm 
# |           184:  .p2align 2 
# |           185:  .type uitofp_is_nan_neg_zero_subnorm, at function 
# |           186: uitofp_is_nan_neg_zero_subnorm: # @uitofp_is_nan_neg_zero_subnorm 
# |           187:  .cfi_startproc 
# |           188: # %bb.0: 
# | next:202'0             X error: no match found
# |           189:  fcvt.s.wu fa5, a0 
# | next:202'0     ~~~~~~~~~~~~~~~~~~~
# |           190:  fclass.s a0, fa5 
# | next:202'0     ~~~~~~~~~~~~~~~~~~
# |           191:  slli a0, a0, 59 
# | next:202'0     ~~~~~~~~~~~~~~~~~
# | next:202'1        ?              possible intended match
# |           192:  srli a0, a0, 63 
# | next:202'0     ~~~~~~~~~~~~~~~~~
# |           193:  ret 
# | next:202'0     ~~~~~
# |           194: .Lfunc_end11: 
# | next:202'0     ~~~~~~~~~~~~~~
# |           195:  .size uitofp_is_nan_neg_zero_subnorm, .Lfunc_end11-uitofp_is_nan_neg_zero_subnorm 
# | next:202'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |           196:  .cfi_endproc 
# | next:202'0     ~~~~~~~~~~~~~~
# |             .
# |             .
# |             .
# |           259:  .p2align 2 
# |           260:  .type uitofp_v4_is_nan_neg_zero_subnorm, at function 
# |           261:  .variant_cc uitofp_v4_is_nan_neg_zero_subnorm 
# |           262: uitofp_v4_is_nan_neg_zero_subnorm: # @uitofp_v4_is_nan_neg_zero_subnorm 
# |           263:  .cfi_startproc 
# |           264: # %bb.0: 
# | next:264'0             X error: no match found
# |           265:  vsetivli zero, 4, e32, m1, ta, ma 
# | next:264'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | next:264'1      ?                                  possible intended match
# |           266:  vfcvt.f.xu.v v8, v8 
# | next:264'0     ~~~~~~~~~~~~~~~~~~~~~
# |           267:  vfclass.v v8, v8 
# | next:264'0     ~~~~~~~~~~~~~~~~~~
# |           268:  li a0, 16 
# | next:264'0     ~~~~~~~~~~~
# |           269:  vmseq.vx v0, v8, a0 
# | next:264'0     ~~~~~~~~~~~~~~~~~~~~~
# |           270:  ret 
# | next:264'0     ~~~~~
# |             .
# |             .
# |             .
# | >>>>>>
# `-----------------------------
# 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/190539