fallback: translate: call llvm.experimental.constrained.uitofp.f32.i128
| Run: | explore-bc8218b282-20261015-075519 |
| Kind: | fallback |
| Category: | translate: call llvm.experimental.constrained.uitofp.f32.i128 |
| Occurrences: | 9 in 3 configs, 1 test files |
| Snippet from: | rv64-float-convert-strict.ll @uitofp_i128_to_f32 via llvm-extract |
| Config: | -mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation |
| Local check: | reproduces at bc8218b282 |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
Snippet:
; Function Attrs: nounwind strictfp
define float @uitofp_i128_to_f32(i128 %a) #0 {
%1 = call float @llvm.experimental.constrained.uitofp.f32.i128(i128 %a, metadata !"round.dynamic", metadata !"fpexcept.strict")
ret float %1
}
; Function Attrs: nocallback nofree nosync nounwind strictfp willreturn memory(inaccessiblemem: readwrite)
declare float @llvm.experimental.constrained.uitofp.f32.i128(i128, metadata, metadata) #1
attributes #0 = { nounwind strictfp }
attributes #1 = { nocallback nofree nosync nounwind strictfp willreturn memory(inaccessiblemem: readwrite) }
Reproduce:
llc -mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation -global-isel=0 snippet.ll -o -
Local llc output:
remark: <unknown>:0:0: unable to translate instruction: call llvm.experimental.constrained.uitofp.f32.i128: ' %1 = call float @llvm.experimental.constrained.uitofp.f32.i128(i128 %a, metadata !"round.dynamic", metadata !"fpexcept.strict")' (in function: uitofp_i128_to_f32)
warning: Instruction selection used fallback path for uitofp_i128_to_f32
Occurrences (9):
| Input | Function | Config |
|---|
| rv64-float-convert-strict.ll | uitofp_i128_to_f32 | -mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation |
| rv64-float-convert-strict.ll | uitofp_i128_to_f32 | -mtriple=riscv64 -mattr=+zfinx -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation |
| rv64-float-convert-strict.ll | uitofp_i128_to_f32 | -mtriple=riscv64 -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation |
| rv64-float-convert-strict.9d755a16cc.ll (mutant of rv64-float-convert-strict.ll) | uitofp_i128_to_f32 | -mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation |
| rv64-float-convert-strict.a491ac75ca.ll (mutant of rv64-float-convert-strict.ll) | uitofp_i128_to_f32 | -mtriple=riscv64 -mattr=+zfinx -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation |
| rv64-float-convert-strict.b8ea5c030e.ll (mutant of rv64-float-convert-strict.ll) | uitofp_i128_to_f32 | -mtriple=riscv64 -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation |
| rv64-float-convert-strict.d52aa52468.ll (mutant of rv64-float-convert-strict.ll) | uitofp_i128_to_f32 | -mtriple=riscv64 -mattr=+zfinx -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation |
| rv64-float-convert-strict.d9ebf6c9d5.ll (mutant of rv64-float-convert-strict.ll) | uitofp_i128_to_f32 | -mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation |
| rv64-float-convert-strict.f1daff389c.ll (mutant of rv64-float-convert-strict.ll) | uitofp_i128_to_f32 | -mtriple=riscv64 -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation |
Generated 2026-10-15 08:05 UTC.