[llvm] [llvm][RISCV] Split fp16/bf16 reduction operations under zvfhmin/zvfbfmin (PR #194817)

via llvm-commits llvm-commits at lists.llvm.org
Fri May 8 00:49:28 PDT 2026


github-actions[bot] wrote:

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

* 173995 tests passed
* 3314 tests skipped
* 1 test failed

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

### LLVM
<details>
<summary>LLVM.CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll</summary>

```
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 2
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/llc -mtriple=riscv32 -target-abi=ilp32d -mattr=+v,+zfh,+zvfh,+f,+d -verify-machineinstrs < /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck --check-prefixes=CHECK,ZVFH,RV32 /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/llc -mtriple=riscv32 -target-abi=ilp32d -mattr=+v,+zfh,+zvfh,+f,+d -verify-machineinstrs
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck --check-prefixes=CHECK,ZVFH,RV32 /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll
# note: command had no output on stdout or stderr
# RUN: at line 3
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/llc -mtriple=riscv64 -target-abi=lp64d -mattr=+v,+zfh,+zvfh,+f,+d -verify-machineinstrs < /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck --check-prefixes=CHECK,ZVFH,RV64 /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/llc -mtriple=riscv64 -target-abi=lp64d -mattr=+v,+zfh,+zvfh,+f,+d -verify-machineinstrs
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck --check-prefixes=CHECK,ZVFH,RV64 /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll
# note: command had no output on stdout or stderr
# RUN: at line 4
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/llc -mtriple=riscv32 -mattr=+v,+zfh,+zvfhmin,+f,+d -verify-machineinstrs < /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck --check-prefixes=CHECK,ZVFHMIN,RV32,ZVFHMIN32 /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/llc -mtriple=riscv32 -mattr=+v,+zfh,+zvfhmin,+f,+d -verify-machineinstrs
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck --check-prefixes=CHECK,ZVFHMIN,RV32,ZVFHMIN32 /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll
# .---command stderr------------
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll:4303:17: error: ZVFHMIN-NEXT: expected string not found in input
# | ; ZVFHMIN-NEXT: slli a1, a1, 3
# |                 ^
# | <stdin>:3208:16: note: scanning from here
# |  csrr a1, vlenb
# |                ^
# | <stdin>:3209:2: note: possible intended match here
# |  slli a1, a1, 2
# |  ^
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll:5564:17: error: ZVFHMIN-NEXT: expected string not found in input
# | ; ZVFHMIN-NEXT: slli a1, a1, 3
# |                 ^
# | <stdin>:4252:16: note: scanning from here
# |  csrr a1, vlenb
# |                ^
# | <stdin>:4253:2: note: possible intended match here
# |  slli a1, a1, 2
# |  ^
# | 
# | Input file: <stdin>
# | Check file: /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |              .
# |              .
# |              .
# |           3203: vreduce_fminimum_v128f16_nonans: # @vreduce_fminimum_v128f16_nonans 
# |           3204:  .cfi_startproc 
# |           3205: # %bb.0: 
# |           3206:  addi sp, sp, -16 
# |           3207:  .cfi_def_cfa_offset 16 
# |           3208:  csrr a1, vlenb 
# | next:4303'0                    X error: no match found
# |           3209:  slli a1, a1, 2 
# | next:4303'0     ~~~~~~~~~~~~~~~~
# | next:4303'1      ?               possible intended match
# |           3210:  sub sp, sp, a1 
# | next:4303'0     ~~~~~~~~~~~~~~~~
# |           3211:  .cfi_escape 0x0f, 0x0d, 0x72, 0x00, 0x11, 0x10, 0x22, 0x11, 0x04, 0x92, 0xa2, 0x38, 0x00, 0x1e, 0x22 # sp + 16 + 4 * vlenb 
# | next:4303'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |           3212:  addi a1, a0, 128 
# | next:4303'0     ~~~~~~~~~~~~~~~~~~
# |           3213:  li a2, 64 
# | next:4303'0     ~~~~~~~~~~~
# |           3214:  vsetvli zero, a2, e16, m8, ta, ma 
# | next:4303'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |              .
# |              .
# |              .
# |           4247: vreduce_fmaximum_v128f16_nonans: # @vreduce_fmaximum_v128f16_nonans 
# |           4248:  .cfi_startproc 
# |           4249: # %bb.0: 
# |           4250:  addi sp, sp, -16 
# |           4251:  .cfi_def_cfa_offset 16 
# |           4252:  csrr a1, vlenb 
# | next:5564'0                    X error: no match found
# |           4253:  slli a1, a1, 2 
# | next:5564'0     ~~~~~~~~~~~~~~~~
# | next:5564'1      ?               possible intended match
# |           4254:  sub sp, sp, a1 
# | next:5564'0     ~~~~~~~~~~~~~~~~
# |           4255:  .cfi_escape 0x0f, 0x0d, 0x72, 0x00, 0x11, 0x10, 0x22, 0x11, 0x04, 0x92, 0xa2, 0x38, 0x00, 0x1e, 0x22 # sp + 16 + 4 * vlenb 
# | next:5564'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |           4256:  addi a1, a0, 128 
# | next:5564'0     ~~~~~~~~~~~~~~~~~~
# |           4257:  li a2, 64 
# | next:5564'0     ~~~~~~~~~~~
# |           4258:  vsetvli zero, a2, e16, m8, ta, ma 
# | next:5564'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |              .
# |              .
# |              .
# | >>>>>>
# `-----------------------------
# 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/194817


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