fallback: translate: call llvm.experimental.constrained.fptosi.i128.f64
| Run: | explore-bc8218b282-20261015-075519 |
| Kind: | fallback |
| Category: | translate: call llvm.experimental.constrained.fptosi.i128.f64 |
| Occurrences: | 6 in 3 configs, 1 test files |
| Snippet from: | rv64-double-convert-strict.ll @fptosi_f64_to_i128 via llvm-extract |
| Config: | -mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation |
| Local check: | reproduces at bc8218b282 |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
Snippet:
; Function Attrs: nounwind strictfp
define i128 @fptosi_f64_to_i128(double %a) #0 {
%1 = call i128 @llvm.experimental.constrained.fptosi.i128.f64(double %a, metadata !"fpexcept.strict")
ret i128 %1
}
; Function Attrs: nocallback nofree nosync nounwind strictfp willreturn memory(inaccessiblemem: readwrite)
declare i128 @llvm.experimental.constrained.fptosi.i128.f64(double, metadata) #1
attributes #0 = { nounwind strictfp }
attributes #1 = { nocallback nofree nosync nounwind strictfp willreturn memory(inaccessiblemem: readwrite) }
Reproduce:
llc -mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation -global-isel=0 snippet.ll -o -
Local llc output:
remark: <unknown>:0:0: unable to translate instruction: call llvm.experimental.constrained.fptosi.i128.f64: ' %1 = call i128 @llvm.experimental.constrained.fptosi.i128.f64(double %a, metadata !"fpexcept.strict")' (in function: fptosi_f64_to_i128)
warning: Instruction selection used fallback path for fptosi_f64_to_i128
Occurrences (6):
| Input | Function | Config |
|---|
| rv64-double-convert-strict.ll | fptosi_f64_to_i128 | -mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation |
| rv64-double-convert-strict.ll | fptosi_f64_to_i128 | -mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation |
| rv64-double-convert-strict.ll | fptosi_f64_to_i128 | -mtriple=riscv64 -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation |
| rv64-double-convert-strict.31f23f36c1.ll (mutant of rv64-double-convert-strict.ll) | fptosi_f64_to_i128 | -mtriple=riscv64 -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation |
| rv64-double-convert-strict.7f2e595975.ll (mutant of rv64-double-convert-strict.ll) | fptosi_f64_to_i128 | -mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation |
| rv64-double-convert-strict.bbf043a34c.ll (mutant of rv64-double-convert-strict.ll) | fptosi_f64_to_i128 | -mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation |
Generated 2026-10-15 08:05 UTC.