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

Tue Feb 4 16:01:22 PST 2025

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 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/185/builds/12655

<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: /b/ml-opt-rel-x86-64-b1/build/bin/opt < /b/ml-opt-rel-x86-64-b1/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 | /b/ml-opt-rel-x86-64-b1/build/bin/FileCheck /b/ml-opt-rel-x86-64-b1/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll --check-prefixes=CHECK,ARGBASED
+ /b/ml-opt-rel-x86-64-b1/build/bin/FileCheck /b/ml-opt-rel-x86-64-b1/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll --check-prefixes=CHECK,ARGBASED
+ /b/ml-opt-rel-x86-64-b1/build/bin/opt '-passes=print<cost-model>' -disable-output -S -mtriple=riscv64 -mattr=+v,+zvfhmin,+zvfbfmin
RUN: at line 3: /b/ml-opt-rel-x86-64-b1/build/bin/opt < /b/ml-opt-rel-x86-64-b1/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 | /b/ml-opt-rel-x86-64-b1/build/bin/FileCheck /b/ml-opt-rel-x86-64-b1/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll --check-prefixes=CHECK,TYPEBASED
+ /b/ml-opt-rel-x86-64-b1/build/bin/opt '-passes=print<cost-model>' -disable-output -S -mtriple=riscv64 -mattr=+v,+zvfhmin,+zvfbfmin --type-based-intrinsic-cost=true
+ /b/ml-opt-rel-x86-64-b1/build/bin/FileCheck /b/ml-opt-rel-x86-64-b1/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll --check-prefixes=CHECK,TYPEBASED
/b/ml-opt-rel-x86-64-b1/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll:1635:20: error: TYPEBASED-LABEL: expected string not found in input
; TYPEBASED-LABEL: 'splice'
                   ^
<stdin>:743:62: note: scanning from here
Printing analysis 'Cost Model Analysis' for function 'splice':
                                                             ^
<stdin>:744:59: note: possible intended match here
Cost 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)
                                                          ^

Input file: <stdin>
Check file: /b/ml-opt-rel-x86-64-b1/llvm-project/llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll

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

Input was:
<<<<<<
              .
              .
              .
            738: Cost Model: Found an estimated cost of 2 for instruction: %69 = call <vscale x 2 x double> @llvm.experimental.vp.splat.nxv2f64(double undef, <vscale x 2 x i1> undef, i32 undef) 
            739: Cost Model: Found an estimated cost of 4 for instruction: %70 = call <vscale x 4 x double> @llvm.experimental.vp.splat.nxv4f64(double undef, <vscale x 4 x i1> undef, i32 undef) 
            740: Cost Model: Found an estimated cost of 8 for instruction: %71 = call <vscale x 8 x double> @llvm.experimental.vp.splat.nxv8f64(double undef, <vscale x 8 x i1> undef, i32 undef) 
            741: Cost Model: Found an estimated cost of 16 for instruction: %72 = call <vscale x 16 x double> @llvm.experimental.vp.splat.nxv16f64(double undef, <vscale x 16 x i1> undef, i32 undef) 
            742: Cost Model: Found an estimated cost of 0 for instruction: ret void 
            743: Printing analysis 'Cost Model Analysis' for function 'splice': 
label:1635'0                                                                  X~ error: no match found
            744: Cost 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) 
label:1635'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
label:1635'1                                                               ?                                                                                                                                                                                                                          possible intended match
            745: Cost Model: Found an estimated cost of 8 for instruction: %splice_nxv32i8 = call <vscale x 32 x i8> @llvm.experimental.vp.splice.nxv32i8(<vscale x 32 x i8> zeroinitializer, <vscale x 32 x i8> zeroinitializer, i32 1, <vscale x 32 x i1> zeroinitializer, i32 poison, i32 poison) 
label:1635'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            746: Cost Model: Found an estimated cost of 2 for instruction: %splice_nxv2i16 = call <vscale x 2 x i16> @llvm.experimental.vp.splice.nxv2i16(<vscale x 2 x i16> zeroinitializer, <vscale x 2 x i16> zeroinitializer, i32 1, <vscale x 2 x i1> zeroinitializer, i32 poison, i32 poison) 
label:1635'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            747: Cost Model: Found an estimated cost of 2 for instruction: %splice_nxv4i16 = call <vscale x 4 x i16> @llvm.experimental.vp.splice.nxv4i16(<vscale x 4 x i16> zeroinitializer, <vscale x 4 x i16> zeroinitializer, i32 1, <vscale x 4 x i1> zeroinitializer, i32 poison, i32 poison) 
label:1635'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            748: Cost Model: Found an estimated cost of 4 for instruction: %splice_nxv8i16 = call <vscale x 8 x i16> @llvm.experimental.vp.splice.nxv8i16(<vscale x 8 x i16> zeroinitializer, <vscale x 8 x i16> zeroinitializer, i32 1, <vscale x 8 x i1> zeroinitializer, i32 poison, i32 poison) 
label:1635'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            749: Cost Model: Found an estimated cost of 8 for instruction: %splice_nxv16i16 = call <vscale x 16 x i16> @llvm.experimental.vp.splice.nxv16i16(<vscale x 16 x i16> zeroinitializer, <vscale x 16 x i16> zeroinitializer, i32 1, <vscale x 16 x i1> zeroinitializer, i32 poison, i32 poison) 
...

```

</details>

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