[llvm] [RISCV][TTI] Implement instruction cost for vp.splice. (PR #124221)

Tue Feb 4 16:03:40 PST 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-gcc-ubuntu` running on `sie-linux-worker3` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/174/builds/12548

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

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM :: Analysis/CostModel/RISCV/vp-intrinsics.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 2: /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/opt < /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll -passes="print<cost-model>" 2>&1 -disable-output -S -mtriple=riscv64 -mattr=+v,+zvfhmin,+zvfbfmin | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll --check-prefixes=CHECK,ARGBASED
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll --check-prefixes=CHECK,ARGBASED
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/opt '-passes=print<cost-model>' -disable-output -S -mtriple=riscv64 -mattr=+v,+zvfhmin,+zvfbfmin
RUN: at line 3: /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/opt < /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll -passes="print<cost-model>" 2>&1 -disable-output -S -mtriple=riscv64 -mattr=+v,+zvfhmin,+zvfbfmin --type-based-intrinsic-cost=true | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll --check-prefixes=CHECK,TYPEBASED
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/opt '-passes=print<cost-model>' -disable-output -S -mtriple=riscv64 -mattr=+v,+zvfhmin,+zvfbfmin --type-based-intrinsic-cost=true
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll --check-prefixes=CHECK,TYPEBASED
[1m/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll:1635:20: [0m[0;1;31merror: [0m[1mTYPEBASED-LABEL: expected string not found in input
[0m; TYPEBASED-LABEL: 'splice'
[0;1;32m                   ^
[0m[1m<stdin>:743:62: [0m[0;1;30mnote: [0m[1mscanning from here
[0mPrinting analysis 'Cost Model Analysis' for function 'splice':
[0;1;32m                                                             ^
[0m[1m<stdin>:744:59: [0m[0;1;30mnote: [0m[1mpossible intended match here
[0mCost Model: Found an estimated cost of 4 for instruction: %splice_nxv16i8 = call <vscale x 16 x i8> @llvm.experimental.vp.splice.nxv16i8(<vscale x 16 x i8> zeroinitializer, <vscale x 16 x i8> zeroinitializer, i32 1, <vscale x 16 x i1> zeroinitializer, i32 poison, i32 poison)
[0;1;32m                                                          ^
[0m
Input file: <stdin>
Check file: /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll

-dump-input=help explains the following input dump.

Input was:
<<<<<<
[1m[0m[0;1;30m              1: [0m[1m[0;1;46mPrinting analysis 'Cost Model Analysis' for function [0m'unsupported_fp_ops'[0;1;46m: [0m
[0;1;32mlabel:6'0                                                             ^~~~~~~~~~~~~~~~~~~~
[0m[0;1;32mlabel:6'1                                                             ^~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m              2: [0m[1m[0;1;46m[0mCost Model: Invalid cost for instruction: %pow = call <vscale x 4 x float> @llvm.pow.nxv4f32(<vscale x 4 x float> %vec, <vscale x 4 x float> %vec)[0;1;46m [0m
[0;1;32mnext:7           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m              3: [0m[1m[0;1;46m[0mCost Model: Invalid cost for instruction: %powi = call <vscale x 4 x float> @llvm.powi.nxv4f32.i32(<vscale x 4 x float> %vec, i32 %extraarg)[0;1;46m [0m
[0;1;32mnext:8           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m              4: [0m[1m[0;1;46m[0mCost Model: Found an estimated cost of 0 for instruction: ret void[0;1;46m [0m
[0;1;32mnext:9           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m              5: [0m[1m[0;1;46mPrinting analysis 'Cost Model Analysis' for function [0m'powi'[0;1;46m: [0m
[0;1;32mlabel:21'0                                                            ^~~~~~
[0m[0;1;32mlabel:21'1                                                            ^~~~~~
[0m[0;1;30m              6: [0m[1m[0;1;46m[0mCost Model: Invalid cost for instruction: %powi = call <vscale x 4 x float> @llvm.powi.nxv4f32.i32(<vscale x 4 x float> %vec, i32 42)[0;1;46m [0m
[0;1;32mnext:22          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m              7: [0m[1m[0;1;46m[0mCost Model: Found an estimated cost of 0 for instruction: ret void[0;1;46m [0m
[0;1;32mnext:23          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m              8: [0m[1m[0;1;46mPrinting analysis 'Cost Model Analysis' for function [0m'fshr'[0;1;46m: [0m
[0;1;32mlabel:30'0                                                            ^~~~~~
[0m[0;1;32mlabel:30'1                                                            ^~~~~~
[0m[0;1;30m              9: [0m[1m[0;1;46m[0mCost Model: Found an estimated cost of 7 for instruction: %1 = call <vscale x 1 x i32> @llvm.fshr.nxv1i32(<vscale x 1 x i32> %a, <vscale x 1 x i32> %b, <vscale x 1 x i32> %c)[0;1;46m [0m
[0;1;32mnext:31          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m             10: [0m[1m[0;1;46m[0mCost Model: Found an estimated cost of 0 for instruction: ret void[0;1;46m [0m
...

```

</details>

https://github.com/llvm/llvm-project/pull/124221