fallback: legalize: G_CTLZ_ZERO_POISON s64,s200
| Run: | explore-bc8218b282-20261015-075519 |
| Kind: | fallback |
| Category: | legalize: G_CTLZ_ZERO_POISON s64,s200 |
| Occurrences: | 5 in 1 configs, 1 test files |
| Snippet from: | bitint-fp-conv-200.ll @test_bitint_200_to_float via llvm-extract |
| Config: | -mtriple=riscv64 -verify-machineinstrs |
| Local check: | reproduces at bc8218b282 |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
Snippet:
; Function Attrs: nounwind
define void @test_bitint_200_to_float(ptr %in, ptr %out) #0 {
%1 = load i200, ptr %in, align 8
%2 = sitofp i200 %1 to float
store float %2, ptr %out, align 4
ret void
}
attributes #0 = { nounwind }
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 legalize instruction: %816:_(s64) = G_CTLZ_ZERO_POISON %9:_(s200) (in function: test_bitint_200_to_float)
warning: Instruction selection used fallback path for test_bitint_200_to_float
Occurrences (5):
| Input | Function | Config |
|---|
| bitint-fp-conv-200.ll | test_bitint_200_to_float | -mtriple=riscv64 -verify-machineinstrs |
| bitint-fp-conv-200.217f9b8002.ll (mutant of bitint-fp-conv-200.ll) | test_bitint_200_to_float | -mtriple=riscv64 -verify-machineinstrs |
| bitint-fp-conv-200.8e5e1f23b6.ll (mutant of bitint-fp-conv-200.ll) | test_bitint_200_to_float | -mtriple=riscv64 -verify-machineinstrs |
| bitint-fp-conv-200.e5ea6fc3c1.ll (mutant of bitint-fp-conv-200.ll) | test_bitint_200_to_float | -mtriple=riscv64 -verify-machineinstrs |
| bitint-fp-conv-200.f52c7bca27.ll (mutant of bitint-fp-conv-200.ll) | test_bitint_200_to_float | -mtriple=riscv64 -verify-machineinstrs |
Generated 2026-10-15 08:05 UTC.