fallback: translate: fmul bfloat

Run:	main-04ca53e65f-20261014-113325
Kind:	fallback
Category:	translate: fmul bfloat NEW
Occurrences:	74 in 47 configs, 31 test files
Snippet from:	pr228084.7d34583928.ll (mutant of pr228084.ll) @f via llvm-extract + llvm-reduce
Config:	`-mtriple=riscv64 -verify-machineinstrs`
Local check:	reproduces at 04ca53e65f
Compiler Explorer:	https://godbolt.org/z/56x5x867M (llc-assertions-trunk, checked 2026-10-14 11:04 UTC): G reproduces

Snippet:

define bfloat @f() {
  %B = fmul bfloat 0.000000e+00, 0.000000e+00
  ret bfloat %B
}

Compiler Explorer panes:

Pane	Options	Exit	Insts	stderr
GlobalISel	`-mtriple=riscv64 -verify-machineinstrs -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.*`	0	2	remark: <unknown>:0:0: unable to translate instruction: fmul: ' %B = fmul bfloat 0.000000e+00, 0.000000e+00' (in function: f) warning: Instruction selection used fallback path for f
SelectionDAG (control)	`-mtriple=riscv64 -verify-machineinstrs -global-isel=0`	0	2	-

Reproduce:

llc -mtriple=riscv64 -verify-machineinstrs -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv64 -verify-machineinstrs -global-isel=0 snippet.ll -o -

Local llc output:

remark: <unknown>:0:0: unable to translate instruction: fmul: '  %B = fmul bfloat 0.000000e+00, 0.000000e+00' (in function: f)
warning: Instruction selection used fallback path for f

Occurrences (74) (first 50):

Input	Function	Config
align.338832a2a0.ll (mutant of align.ll)	foo	`-mtriple=riscv32 -verify-machineinstrs`
align.ca5632b88c.ll (mutant of align.ll)	foo	`-mtriple=riscv32 -mattr=+c -verify-machineinstrs`
bfloat-convert-half.4f971ca9ec.ll (mutant of bfloat-convert-half.ll)	fcvt_bf16_h	`-mtriple=riscv32 -mattr=+zfhmin,+zfbfmin -verify-machineinstrs`
bfloat-convert-half.a0cb7c27ca.ll (mutant of bfloat-convert-half.ll)	fcvt_bf16_h	`-mtriple=riscv64 -mattr=+zfhmin,+zfbfmin -verify-machineinstrs`
debug-line.919db64800.ll (mutant of debug-line.ll)	foo	`-mtriple=riscv64`
eh-dwarf-cfa.968387194f.ll (mutant of eh-dwarf-cfa.ll)	dwarf	`-mtriple=riscv64`
eh-dwarf-cfa.b7d5371501.ll (mutant of eh-dwarf-cfa.ll)	dwarf	`-mtriple=riscv32`
flt-rounds.13557d22a9.ll (mutant of flt-rounds.ll)	test_flt_rounds	`-mtriple=riscv64 -verify-machineinstrs`
flt-rounds.6f24b60970.ll (mutant of flt-rounds.ll)	test_flt_rounds	`-mtriple=riscv32 -verify-machineinstrs`
frame.31d06a0d00.ll (mutant of frame.ll)	test	`-mtriple=riscv32 -verify-machineinstrs`
frame.babb3985af.ll (mutant of frame.ll)	test	`-mtriple=riscv32 -frame-pointer=all -verify-machineinstrs`
inline-asm-clobbers.0a3b926d58.ll (mutant of inline-asm-clobbers.ll)	testcase	`-mtriple=riscv32 -mattr=+f -target-abi=ilp32 -verify-machineinstrs`
inline-asm-clobbers.20c98b062d.ll (mutant of inline-asm-clobbers.ll)	testcase	`-mtriple=riscv64 -mattr=+f -target-abi=lp64 -verify-machineinstrs`
inline-asm-clobbers.3b80f79303.ll (mutant of inline-asm-clobbers.ll)	testcase	`-mtriple=riscv32 -mattr=+d -target-abi ilp32d -verify-machineinstrs`
inline-asm-clobbers.489b16a6c6.ll (mutant of inline-asm-clobbers.ll)	testcase	`-mtriple=riscv64 -mattr=+d -target-abi lp64d -verify-machineinstrs`
inline-asm-clobbers.4b11071e74.ll (mutant of inline-asm-clobbers.ll)	testcase	`-mtriple=riscv64 -mattr=+d -target-abi=lp64 -verify-machineinstrs`
inline-asm-clobbers.5d06c48c02.ll (mutant of inline-asm-clobbers.ll)	testcase	`-mtriple=riscv32 -mattr=+d -target-abi=ilp32 -verify-machineinstrs`
inline-asm-clobbers.70b558a07a.ll (mutant of inline-asm-clobbers.ll)	testcase	`-mtriple=riscv64 -mattr=+f -target-abi lp64f -verify-machineinstrs`
inline-asm-clobbers.b6b53d2ca2.ll (mutant of inline-asm-clobbers.ll)	testcase	`-mtriple=riscv32 -target-abi=ilp32 -verify-machineinstrs`
inline-asm-clobbers.d71174b702.ll (mutant of inline-asm-clobbers.ll)	testcase	`-mtriple=riscv32 -mattr=+f -target-abi ilp32f -verify-machineinstrs`
inline-asm-clobbers.e73e2f34dc.ll (mutant of inline-asm-clobbers.ll)	testcase	`-mtriple=riscv64 -target-abi=lp64 -verify-machineinstrs`
inline-asm-i-constraint-i1.60ba489e95.ll (mutant of inline-asm-i-constraint-i1.ll)	foo	`-mtriple=riscv64-unknown-linux-gnu`
inline-option-directive.5cc5f4d88e.ll (mutant of inline-option-directive.ll)	test	`-mtriple=riscv64`
note-gnu-property-zicfiss.0764f75732.ll (mutant of note-gnu-property-zicfiss.ll)	f	`--mtriple=riscv64`
note-gnu-property-zicfiss.c5653e0307.ll (mutant of note-gnu-property-zicfiss.ll)	f	`--mtriple=riscv32`
option-arch-experimental.104917c1b7.ll (mutant of option-arch-experimental.ll)	f	`-mtriple=riscv64`
pei-crash.e59fd82f42.ll (mutant of pei-crash.ll)	a	`-O0 --frame-pointer=none -mtriple=riscv32 -mattr=+zcmp -verify-machineinstrs`
pr228084.7d34583928.ll (mutant of pr228084.ll)	f	`-mtriple=riscv64 -verify-machineinstrs`
pr64772.53ad30bac5.ll (mutant of pr64772.ll)	f	`-mtriple=riscv64`
pr64935.6de3f06c65.ll (mutant of pr64935.ll)	f	`-mtriple=riscv32`
pr88365.35b54a4d2d.ll (mutant of pr88365.ll)	foo	`-mtriple=riscv32`
pr92193.29f56e2134.ll (mutant of pr92193.ll)	foo	`-mtriple=riscv64-unknown-linux-gnu`
pr92193.e9390d49f8.ll (mutant of pr92193.ll)	foo	`-mtriple=riscv32-unknown-linux-gnu`
readcyclecounter.67199b5401.ll (mutant of readcyclecounter.ll)	test_builtin_readcyclecounter	`-mtriple=riscv32 -verify-machineinstrs`
readcyclecounter.9db16ce83e.ll (mutant of readcyclecounter.ll)	test_builtin_readcyclecounter	`-mtriple=riscv64 -verify-machineinstrs`
readsteadycounter.296a1cd663.ll (mutant of readsteadycounter.ll)	test_builtin_readsteadycounter	`-mtriple=riscv32 -verify-machineinstrs`
readsteadycounter.cdc6ccc0f4.ll (mutant of readsteadycounter.ll)	test_builtin_readsteadycounter	`-mtriple=riscv64 -verify-machineinstrs`
regalloc-last-chance-recoloring-failure.4de6f20aee.ll (mutant of regalloc-last-chance-recoloring-failure.ll)	last_chance_recoloring_failure	`-mtriple=riscv64 -mattr=+f,+m,+zfh,+zvfh -enable-subreg-liveness=true`
regalloc-last-chance-recoloring-failure.55755292df.ll (mutant of regalloc-last-chance-recoloring-failure.ll)	last_chance_recoloring_failure	`-mtriple=riscv64 -mattr=+f,+m,+zfh,+zvfh -enable-subreg-liveness=false`
riscv-zihintpause.2a960523ca.ll (mutant of riscv-zihintpause.ll)	test_pause	`-mtriple=riscv32 -verify-machineinstrs`
riscv-zihintpause.957661c1ca.ll (mutant of riscv-zihintpause.ll)	test_pause	`-mtriple=riscv64 -verify-machineinstrs`
riscv-zihintpause.9d28b24bfb.ll (mutant of riscv-zihintpause.ll)	test_pause	`-mtriple=riscv64 -mattr=+zihintpause -verify-machineinstrs`
rv64-large-stack.aee777caec.ll (mutant of rv64-large-stack.ll)	foo	`-mtriple=riscv64 -verify-machineinstrs`
rv64-stackmap-nops.2fb2a33671.ll (mutant of rv64-stackmap-nops.ll)	test_shadow_optimization	`-mtriple=riscv64 -mattr=+c`
rv64-stackmap-nops.a5e5f00e0e.ll (mutant of rv64-stackmap-nops.ll)	test_shadow_optimization	`-mtriple=riscv64`
saverestore-zilsd-fixed-location.829f85ebba.ll (mutant of saverestore-zilsd-fixed-location.ll)	fixed_location_sr	`-mtriple=riscv32 -mattr=+save-restore,+zilsd -verify-machineinstrs`
saverestore-zilsd-fixed-location.d04636fb91.ll (mutant of saverestore-zilsd-fixed-location.ll)	fixed_location_sr	`-mtriple=riscv32 -mattr=+save-restore -verify-machineinstrs`
sched-model-load-latency.354f54c650.ll (mutant of sched-model-load-latency.ll)	large_int	`-mtriple=riscv64 -mcpu=rocket-rv64 -riscv-sched-load-latency=2 -verify-machineinstrs`
sched-model-load-latency.60b5b8928d.ll (mutant of sched-model-load-latency.ll)	large_int	`-mtriple=riscv64 -mcpu=rocket-rv64 -verify-machineinstrs`
spacemitx60-stack-reorder.9ecc930a3e.ll (mutant of spacemitx60-stack-reorder.ll)	test_stack_sort	`-mtriple=riscv64 -mcpu=spacemit-x60 -verify-machineinstrs`

Generated 2026-10-15 08:05 UTC.