[llvm] [VPlan] Use frozen combined condition in early exit first-active-lane (PR #223643)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `ml-opt-rel-x86-64` running on `ml-opt-rel-x86-64-b1` while building `llvm` at step 5 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/185/builds/4338

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

```
Step 5 (annotate) failure: '../llvm-zorg/zorg/buildbot/builders/annotated/mlgo-emitc.sh --jobs=64' (failure)
...
PASS: LLVM :: tools/llvm-cov/branch-logical-mixed.test (21966 of 68146)
PASS: LLVM :: Transforms/SLPVectorizer/X86/vec3-gather-some-loads.ll (21967 of 68146)
PASS: LLVM :: CodeGen/RISCV/rvv/sifive_sf_mm_e4m3_e5m2.ll (21968 of 68146)
PASS: LLVM :: CodeGen/Thumb2/bti-pac-replace-2.ll (21969 of 68146)
PASS: LLVM :: CodeGen/AArch64/wide-scalar-shift-by-byte-multiple-legalization.ll (21970 of 68146)
PASS: LLVM :: CodeGen/X86/not-of-dec.ll (21971 of 68146)
PASS: LLVM :: MC/Disassembler/AMDGPU/gfx10_vop1.txt (21972 of 68146)
PASS: LLVM :: CodeGen/X86/mul-constant-i8.ll (21973 of 68146)
PASS: LLVM :: DebugInfo/MIR/AArch64/dbgcall-site-indirect-param.mir (21974 of 68146)
PASS: LLVM :: CodeGen/X86/fastregalloc-selfloop.mir (21975 of 68146)
FAIL: LLVM :: Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll (21976 of 68146)
******************** TEST 'LLVM :: Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 2
/b/build/llvm-project/build-mlgo/bin/opt -p loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -S /b/build/llvm-project/llvm/test/Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll | /b/build/llvm-project/build-mlgo/bin/FileCheck --check-prefix=VF1IC2 /b/build/llvm-project/llvm/test/Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll
# executed command: /b/build/llvm-project/build-mlgo/bin/opt -p loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -S /b/build/llvm-project/llvm/test/Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll
# executed command: /b/build/llvm-project/build-mlgo/bin/FileCheck --check-prefix=VF1IC2 /b/build/llvm-project/llvm/test/Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll
# .---command stderr------------
# | /b/build/llvm-project/llvm/test/Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll:147:16: error: VF1IC2-NEXT: expected string not found in input
# | ; VF1IC2-NEXT: [[TMP13:%.*]] = icmp eq i1 [[TMP6]], false
# |                ^
# | <stdin>:86:20: note: scanning from here
# |  %12 = mul i8 %4, 7
# |                    ^
# | <stdin>:86:20: note: with "TMP6" equal to "%6"
# |  %12 = mul i8 %4, 7
# |                    ^
# | <stdin>:86:20: note: pattern attempts to capture variables: "TMP13"
# |  %12 = mul i8 %4, 7
# |                    ^
# | <stdin>:87:2: note: possible intended match here
# |  %13 = icmp eq i1 %8, false
# |  ^
# | 
# | Input file: <stdin>
# | Check file: /b/build/llvm-project/llvm/test/Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |             .
# |             .
# |             .
# |            81: middle.block: ; preds = %vector.body.interim 
# |            82:  br label %exit 
Step 8 (Run tests) failure: Run tests (failure)
...
PASS: LLVM :: tools/llvm-cov/branch-logical-mixed.test (21966 of 68146)
PASS: LLVM :: Transforms/SLPVectorizer/X86/vec3-gather-some-loads.ll (21967 of 68146)
PASS: LLVM :: CodeGen/RISCV/rvv/sifive_sf_mm_e4m3_e5m2.ll (21968 of 68146)
PASS: LLVM :: CodeGen/Thumb2/bti-pac-replace-2.ll (21969 of 68146)
PASS: LLVM :: CodeGen/AArch64/wide-scalar-shift-by-byte-multiple-legalization.ll (21970 of 68146)
PASS: LLVM :: CodeGen/X86/not-of-dec.ll (21971 of 68146)
PASS: LLVM :: MC/Disassembler/AMDGPU/gfx10_vop1.txt (21972 of 68146)
PASS: LLVM :: CodeGen/X86/mul-constant-i8.ll (21973 of 68146)
PASS: LLVM :: DebugInfo/MIR/AArch64/dbgcall-site-indirect-param.mir (21974 of 68146)
PASS: LLVM :: CodeGen/X86/fastregalloc-selfloop.mir (21975 of 68146)
FAIL: LLVM :: Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll (21976 of 68146)
******************** TEST 'LLVM :: Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 2
/b/build/llvm-project/build-mlgo/bin/opt -p loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -S /b/build/llvm-project/llvm/test/Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll | /b/build/llvm-project/build-mlgo/bin/FileCheck --check-prefix=VF1IC2 /b/build/llvm-project/llvm/test/Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll
# executed command: /b/build/llvm-project/build-mlgo/bin/opt -p loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -S /b/build/llvm-project/llvm/test/Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll
# executed command: /b/build/llvm-project/build-mlgo/bin/FileCheck --check-prefix=VF1IC2 /b/build/llvm-project/llvm/test/Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll
# .---command stderr------------
# | /b/build/llvm-project/llvm/test/Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll:147:16: error: VF1IC2-NEXT: expected string not found in input
# | ; VF1IC2-NEXT: [[TMP13:%.*]] = icmp eq i1 [[TMP6]], false
# |                ^
# | <stdin>:86:20: note: scanning from here
# |  %12 = mul i8 %4, 7
# |                    ^
# | <stdin>:86:20: note: with "TMP6" equal to "%6"
# |  %12 = mul i8 %4, 7
# |                    ^
# | <stdin>:86:20: note: pattern attempts to capture variables: "TMP13"
# |  %12 = mul i8 %4, 7
# |                    ^
# | <stdin>:87:2: note: possible intended match here
# |  %13 = icmp eq i1 %8, false
# |  ^
# | 
# | Input file: <stdin>
# | Check file: /b/build/llvm-project/llvm/test/Transforms/LoopVectorize/early-exit-live-out-extract-lane.ll
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |             .
# |             .
# |             .
# |            81: middle.block: ; preds = %vector.body.interim 
# |            82:  br label %exit 

```

</details>

https://github.com/llvm/llvm-project/pull/223643