fallback: translate: fadd bfloat

Run:	main-04ca53e65f-20261014-105623
Kind:	fallback
Category:	translate: fadd bfloat
Occurrences:	22 in 10 configs, 3 test files
Snippet from:	bf16-promote.ll @test_fadd 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:

; Function Attrs: nounwind
define void @test_fadd(ptr %p, ptr %q) #0 {
  %a = load bfloat, ptr %p, align 2
  %b = load bfloat, ptr %q, align 2
  %r = fadd bfloat %a, %b
  store bfloat %r, ptr %p, 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: fadd: '  %r = fadd bfloat %a, %b' (in function: test_fadd)
warning: Instruction selection used fallback path for test_fadd

Occurrences (22):

Input	Function	Config
bf16-promote.ll	test_fadd	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32d`
bf16-promote.ll	test_fadd	`-mtriple=riscv64 -mattr=+d -target-abi=lp64d`
bfloat-mem.ll	flh	`-mtriple=riscv32 -mattr=+zfbfmin -verify-machineinstrs -target-abi ilp32f`
bfloat-mem.ll	flh	`-mtriple=riscv64 -mattr=+zfbfmin -verify-machineinstrs -target-abi lp64f`
bfloat.ll	bfloat_load	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32 -verify-machineinstrs`
bfloat.ll	bfloat_load	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32d -verify-machineinstrs`
bfloat.ll	bfloat_load	`-mtriple=riscv32 -verify-machineinstrs`
bfloat.ll	bfloat_load	`-mtriple=riscv64 -mattr=+d -target-abi=lp64 -verify-machineinstrs`
bfloat.ll	bfloat_load	`-mtriple=riscv64 -mattr=+d -target-abi=lp64d -verify-machineinstrs`
bfloat.ll	bfloat_load	`-mtriple=riscv64 -verify-machineinstrs`
bf16-promote.1206224c4a.ll (mutant of bf16-promote.ll)	test_fadd	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32d`
bf16-promote.4945c69c68.ll (mutant of bf16-promote.ll)	test_fadd	`-mtriple=riscv64 -mattr=+d -target-abi=lp64d`
bf16-promote.8b91f67f87.ll (mutant of bf16-promote.ll)	test_fadd	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32d`
bf16-promote.9833be5952.ll (mutant of bf16-promote.ll)	test_fadd	`-mtriple=riscv64 -mattr=+d -target-abi=lp64d`
bfloat-mem.4599e3bb00.ll (mutant of bfloat-mem.ll)	flh	`-mtriple=riscv32 -mattr=+zfbfmin -verify-machineinstrs -target-abi ilp32f`
bfloat-mem.b5ed679476.ll (mutant of bfloat-mem.ll)	flh	`-mtriple=riscv64 -mattr=+zfbfmin -verify-machineinstrs -target-abi lp64f`
bfloat.03fcd18e71.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32 -verify-machineinstrs`
bfloat.8af1202731.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv32 -verify-machineinstrs`
bfloat.b9fe75c0f9.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv64 -mattr=+d -target-abi=lp64d -verify-machineinstrs`
bfloat.e9ac6a295e.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv64 -verify-machineinstrs`
bfloat.f005cff5d7.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32d -verify-machineinstrs`
bfloat.f7b0714813.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv64 -mattr=+d -target-abi=lp64 -verify-machineinstrs`

Generated 2026-10-15 08:05 UTC.