fallback: translate: fmul bfloat

Run:explore-04ca53e65f-20261014-114124
Kind:fallback
Category:translate: fmul bfloat NEW
Occurrences:2 in 2 configs, 1 test files
Snippet from:bf16-promote.ba1a605c60.ll (mutant of bf16-promote.ll) @test_load_store via llvm-extract
Config:-mtriple=riscv32 -mattr=+d -target-abi=ilp32d
Local check:reproduces at 04ca53e65f
Compiler Explorer:not uploaded (over --godbolt-limit or disabled)

Snippet:

@G.1 = external global bfloat
@G.2 = external global bfloat

; Function Attrs: nounwind
define void @test_load_store(ptr %p, ptr %q) #0 {
  %LGV = load bfloat, ptr @G.1, align 2
  %a = load bfloat, ptr %p, align 2
  %B = fmul bfloat %a, %LGV
  store bfloat %a, ptr %q, align 2
  store bfloat %B, ptr @G.2, align 2
  ret void
}

attributes #0 = { nounwind }

Reproduce:

llc -mtriple=riscv32 -mattr=+d -target-abi=ilp32d -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv32 -mattr=+d -target-abi=ilp32d -global-isel=0 snippet.ll -o -

Local llc output:

remark: <unknown>:0:0: unable to translate instruction: fmul: '  %B = fmul bfloat %a, %LGV' (in function: test_load_store)
warning: Instruction selection used fallback path for test_load_store

Occurrences (2):

InputFunctionConfig
bf16-promote.ba1a605c60.ll (mutant of bf16-promote.ll)test_load_store-mtriple=riscv32 -mattr=+d -target-abi=ilp32d
bf16-promote.d0ff33792a.ll (mutant of bf16-promote.ll)test_load_store-mtriple=riscv64 -mattr=+d -target-abi=lp64d

Generated 2026-10-15 08:05 UTC.