fallback: legalize: G_UITOFP s16,s128
| Run: | main-04ca53e65f-20261014-113325 |
| Kind: | fallback |
| Category: | legalize: G_UITOFP s16,s128 |
| Occurrences: | 2 in 2 configs, 1 test files |
| Snippet from: | rv64-half-convert.ll @uitofp_i128_to_f16 via llvm-extract |
| Config: | -mtriple=riscv64 -mattr=+zfh -verify-machineinstrs -target-abi lp64f |
| Local check: | reproduces at 04ca53e65f |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
Snippet:
; Function Attrs: nounwind
define half @uitofp_i128_to_f16(i128 %a) #0 {
%1 = uitofp i128 %a to half
ret half %1
}
attributes #0 = { nounwind }
Reproduce:
llc -mtriple=riscv64 -mattr=+zfh -verify-machineinstrs -target-abi lp64f -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv64 -mattr=+zfh -verify-machineinstrs -target-abi lp64f -global-isel=0 snippet.ll -o -
Local llc output:
remark: <unknown>:0:0: unable to legalize instruction: %3:_(s16) = G_UITOFP %0:_(s128) (in function: uitofp_i128_to_f16)
warning: Instruction selection used fallback path for uitofp_i128_to_f16
Occurrences (2):
| Input | Function | Config |
|---|
| rv64-half-convert.ll | uitofp_i128_to_f16 | -mtriple=riscv64 -mattr=+zfh -verify-machineinstrs -target-abi lp64f |
| rv64-half-convert.ll | uitofp_i128_to_f16 | -mtriple=riscv64 -verify-machineinstrs -target-abi lp64 |
Generated 2026-10-15 08:05 UTC.