[llvm] Revert "[WebAssembly] Mark extract.last.active as having invalid cost." (PR #180942)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `openmp-offload-amdgpu-runtime-2` running on `rocm-worker-hw-02` while building `llvm` at step 8 "Add check check-llvm".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/10/builds/22565

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 8 (Add check check-llvm) failure: test (failure)
******************** TEST 'LLVM :: Analysis/CostModel/WebAssembly/extract-last-active.ll' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 2
/home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/bin/opt < /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/llvm/test/Analysis/CostModel/WebAssembly/extract-last-active.ll -passes="print<cost-model>" 2>&1 -disable-output -S -mtriple=wasm32-unknown-unknown | /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/bin/FileCheck /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/llvm/test/Analysis/CostModel/WebAssembly/extract-last-active.ll
# executed command: /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/bin/opt '-passes=print<cost-model>' -disable-output -S -mtriple=wasm32-unknown-unknown
# note: command had no output on stdout or stderr
# executed command: /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/bin/FileCheck /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/llvm/test/Analysis/CostModel/WebAssembly/extract-last-active.ll
# .---command stderr------------
# | /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/llvm/test/Analysis/CostModel/WebAssembly/extract-last-active.ll:6:15: error: CHECK-NEXT: expected string not found in input
# | ; CHECK-NEXT: Cost Model: Found an estimated cost of 48 for instruction: %v16i8 = call i8 @llvm.experimental.vector.extract.last.active.v16i8(<16 x i8> poison, <16 x i1> poison, i8 poison)
# |               ^
# | <stdin>:2:67: note: scanning from here
# | Printing analysis 'Cost Model Analysis' for function 'extractions':
# |                                                                   ^
# | <stdin>:3:1: note: possible intended match here
# | Cost Model: Found an estimated cost of 1 for instruction: %v16i8 = call i8 @llvm.experimental.vector.extract.last.active.v16i8(<16 x i8> poison, <16 x i1> poison, i8 poison)
# | ^
# | 
# | Input file: <stdin>
# | Check file: /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/llvm/test/Analysis/CostModel/WebAssembly/extract-last-active.ll
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |           1: /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/bin/opt: WARNING: failed to create target machine for 'wasm32-unknown-unknown': unable to get target for 'wasm32-unknown-unknown', see --version and --triple. 
# |           2: Printing analysis 'Cost Model Analysis' for function 'extractions': 
# | next:6'0                                                                       X~ error: no match found
# |           3: Cost Model: Found an estimated cost of 1 for instruction: %v16i8 = call i8 @llvm.experimental.vector.extract.last.active.v16i8(<16 x i8> poison, <16 x i1> poison, i8 poison) 
# | next:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | next:6'1     ?                                                                                                                                                                              possible intended match
# |           4: Cost Model: Found an estimated cost of 1 for instruction: %v8i16 = call i16 @llvm.experimental.vector.extract.last.active.v8i16(<8 x i16> poison, <8 x i1> poison, i16 poison) 
# | next:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |           5: Cost Model: Found an estimated cost of 1 for instruction: %v4i32 = call i32 @llvm.experimental.vector.extract.last.active.v4i32(<4 x i32> poison, <4 x i1> poison, i32 poison) 
# | next:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |           6: Cost Model: Found an estimated cost of 1 for instruction: %v2i64 = call i64 @llvm.experimental.vector.extract.last.active.v2i64(<2 x i64> poison, <2 x i1> poison, i64 poison) 
# | next:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |           7: Cost Model: Found an estimated cost of 1 for instruction: %v8f16 = call half @llvm.experimental.vector.extract.last.active.v8f16(<8 x half> poison, <8 x i1> poison, half poison) 
# | next:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |           8: Cost Model: Found an estimated cost of 1 for instruction: %v8bf16 = call bfloat @llvm.experimental.vector.extract.last.active.v8bf16(<8 x bfloat> poison, <8 x i1> poison, bfloat poison) 
# | next:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |           .
# |           .
# |           .
# | >>>>>>
# `-----------------------------
# error: command failed with exit status: 1
...

```

</details>

https://github.com/llvm/llvm-project/pull/180942