[llvm] [AArch64] Tighten conditions for expanding GET_ACTIVE_LANE_MASK (PR #208962)

[via llvm-commits]

github-actions[bot] wrote:

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

* 178730 tests passed
* 3596 tests skipped
* 1 test failed

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

### LLVM
<details>
<summary>LLVM.Analysis/CostModel/AArch64/sve-intrinsics.ll</summary>

```
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 2
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/opt < /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Analysis/CostModel/AArch64/sve-intrinsics.ll -passes="print<cost-model>" -cost-kind=all 2>&1 -disable-output -S -mtriple=aarch64--linux-gnu -mattr=+sve | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Analysis/CostModel/AArch64/sve-intrinsics.ll --check-prefix=CHECK-VSCALE-1
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/opt '-passes=print<cost-model>' -cost-kind=all -disable-output -S -mtriple=aarch64--linux-gnu -mattr=+sve
# 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/Analysis/CostModel/AArch64/sve-intrinsics.ll --check-prefix=CHECK-VSCALE-1
# .---command stderr------------
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Analysis/CostModel/AArch64/sve-intrinsics.ll:870:24: error: CHECK-VSCALE-1-NEXT: expected string not found in input
# | ; CHECK-VSCALE-1-NEXT: Cost Model: Found costs of 6 for: %mask_v16i1_i16 = call <16 x i1> @llvm.get.active.lane.mask.v16i1.i16(i16 poison, i16 poison)
# |                        ^
# | <stdin>:190:129: note: scanning from here
# | Cost Model: Found costs of 48 for: %mask_v32i1_i64 = call <32 x i1> @llvm.get.active.lane.mask.v32i1.i64(i64 poison, i64 poison)
# |                                                                                                                                 ^
# | <stdin>:191:1: note: possible intended match here
# | Cost Model: Found costs of 32 for: %mask_v16i1_i16 = call <16 x i1> @llvm.get.active.lane.mask.v16i1.i16(i16 poison, i16 poison)
# | ^
# | 
# | Input file: <stdin>
# | Check file: /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Analysis/CostModel/AArch64/sve-intrinsics.ll
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |             .
# |             .
# |             .
# |           185: Cost Model: Found costs of 4 for: %mask_v2i1_i64 = call <2 x i1> @llvm.get.active.lane.mask.v2i1.i64(i64 poison, i64 poison) 
# |           186: Cost Model: Found costs of 32 for: %mask_v16i1_i32 = call <16 x i1> @llvm.get.active.lane.mask.v16i1.i32(i32 poison, i32 poison) 
# |           187: Cost Model: Found costs of 16 for: %mask_v8i1_i32 = call <8 x i1> @llvm.get.active.lane.mask.v8i1.i32(i32 poison, i32 poison) 
# |           188: Cost Model: Found costs of 8 for: %mask_v4i1_i32 = call <4 x i1> @llvm.get.active.lane.mask.v4i1.i32(i32 poison, i32 poison) 
# |           189: Cost Model: Found costs of 4 for: %mask_v2i1_i32 = call <2 x i1> @llvm.get.active.lane.mask.v2i1.i32(i32 poison, i32 poison) 
# |           190: Cost Model: Found costs of 48 for: %mask_v32i1_i64 = call <32 x i1> @llvm.get.active.lane.mask.v32i1.i64(i64 poison, i64 poison) 
# | next:870'0                                                                                                                                    {   search range start (exclusive)
# | next:870'1                                                                                                                                        error: no match found in search range
# |           191: Cost Model: Found costs of 32 for: %mask_v16i1_i16 = call <16 x i1> @llvm.get.active.lane.mask.v16i1.i16(i16 poison, i16 poison) 
# | next:870'2     ?                                                                                                                                  possible intended match
# |           192: Cost Model: Found costs of RThru:0 CodeSize:1 Lat:1 SizeLat:1 for: ret void 
# |           193: Printing analysis 'Cost Model Analysis' for function 'fshr': 
# | next:870'3                                                                }   search range end (exclusive)
# |           194: Cost Model: Found costs of 5 for: %1 = call <vscale x 16 x i8> @llvm.fshr.nxv16i8(<vscale x 16 x i8> poison, <vscale x 16 x i8> poison, <vscale x 16 x i8> poison) 
# |           195: Cost Model: Found costs of 5 for: %2 = call <vscale x 8 x i16> @llvm.fshr.nxv8i16(<vscale x 8 x i16> poison, <vscale x 8 x i16> poison, <vscale x 8 x i16> poison) 
# |           196: Cost Model: Found costs of 5 for: %3 = call <vscale x 4 x i32> @llvm.fshr.nxv4i32(<vscale x 4 x i32> poison, <vscale x 4 x i32> poison, <vscale x 4 x i32> poison) 
# |           197: Cost Model: Found costs of 5 for: %4 = call <vscale x 2 x i64> @llvm.fshr.nxv2i64(<vscale x 2 x i64> poison, <vscale x 2 x i64> poison, <vscale x 2 x i64> poison) 
# |           198: Cost Model: Found costs of RThru:0 CodeSize:1 Lat:1 SizeLat:1 for: ret void 
# |             .
# |             .
# |             .
# | >>>>>>
# `-----------------------------
# 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/208962