fallback: translate: fmul bfloat
| Run: | explore-bc8218b282-20261015-075519 |
| Kind: | fallback |
| Category: | translate: fmul bfloat NEW |
| Occurrences: | 3 in 3 configs, 2 test files |
| Snippet from: | bf16-promote.6ffc6d614b.ll (mutant of bf16-promote.ll) @test_fpextend_float 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:
@G.3 = external global bfloat
; Function Attrs: nounwind
define float @test_fpextend_float(ptr %p) #0 {
%LGV1 = load bfloat, ptr @G.3, align 2
%a = load bfloat, ptr %p, align 2
%B = fmul bfloat %a, %LGV1
%r = fpext bfloat %a to float
store bfloat %B, ptr @G.3, align 2
ret float %r
}
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, %LGV1' (in function: test_fpextend_float)
warning: Instruction selection used fallback path for test_fpextend_float
Occurrences (3):
| Input | Function | Config |
|---|
| bf16-promote.6ffc6d614b.ll (mutant of bf16-promote.ll) | test_fpextend_float | -mtriple=riscv32 -mattr=+d -target-abi=ilp32d |
| bf16-promote.9d8eef37c6.ll (mutant of bf16-promote.ll) | test_fpextend_float | -mtriple=riscv64 -mattr=+d -target-abi=lp64d |
| rv32p.d98b167086.ll (mutant of rv32p.ll) | mm_sati_1_i32 | -mtriple=riscv32 -mattr=+experimental-p,+zbb,+m -verify-machineinstrs |
Generated 2026-10-15 08:05 UTC.