fallback: translate: fadd bfloat

Run:	explore-bc8218b282-20261015-075519
Kind:	fallback
Category:	translate: fadd bfloat
Occurrences:	30 in 12 configs, 4 test files
Snippet from:	bf16-promote.ll @test_fadd via llvm-extract
Config:	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32d`
Local check:	reproduces at bc8218b282
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 (30):

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.311a40c38b.ll (mutant of bf16-promote.ll)	test_fadd	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32d`
bf16-promote.bcdebb8928.ll (mutant of bf16-promote.ll)	test_fadd	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32d`
bf16-promote.c8ad6059c0.ll (mutant of bf16-promote.ll)	test_fadd	`-mtriple=riscv64 -mattr=+d -target-abi=lp64d`
bf16-promote.d4a0e6de63.ll (mutant of bf16-promote.ll)	test_fadd	`-mtriple=riscv64 -mattr=+d -target-abi=lp64d`
bfloat-mem.30a8551fc4.ll (mutant of bfloat-mem.ll)	flh	`-mtriple=riscv64 -mattr=+zfbfmin -verify-machineinstrs -target-abi lp64f`
bfloat-mem.a59a935ff4.ll (mutant of bfloat-mem.ll)	flh	`-mtriple=riscv32 -mattr=+zfbfmin -verify-machineinstrs -target-abi ilp32f`
bfloat.0815a95ed6.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32 -verify-machineinstrs`
bfloat.12c196587c.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32 -verify-machineinstrs`
bfloat.237118ad26.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv32 -verify-machineinstrs`
bfloat.2d08511d08.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv64 -verify-machineinstrs`
bfloat.4a82695e8f.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv64 -mattr=+d -target-abi=lp64 -verify-machineinstrs`
bfloat.5675a9e5f1.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv64 -verify-machineinstrs`
bfloat.74d2441dae.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv64 -mattr=+d -target-abi=lp64 -verify-machineinstrs`
bfloat.88388351b2.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv32 -verify-machineinstrs`
bfloat.97587c7218.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32d -verify-machineinstrs`
bfloat.9c9f32f9c6.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv64 -mattr=+d -target-abi=lp64d -verify-machineinstrs`
bfloat.a0ec5047ec.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv64 -mattr=+d -target-abi=lp64d -verify-machineinstrs`
bfloat.f2e232be69.ll (mutant of bfloat.ll)	bfloat_load	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32d -verify-machineinstrs`
rvp-simd-32.13f08d511a.ll (mutant of rvp-simd-32.ll)	test_mulu_h11_i32	`-mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs`
rvp-simd-32.8040ecd92f.ll (mutant of rvp-simd-32.ll)	test_mulu_h11_i32	`-mtriple=riscv32 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs`

Generated 2026-10-15 08:05 UTC.