fallback: translate: call llvm.experimental.constrained.sitofp.f16.i16

Run:explore-04ca53e65f-20261014-114124
Kind:fallback
Category:translate: call llvm.experimental.constrained.sitofp.f16.i16
Occurrences:68 in 17 configs, 1 test files
Snippet from:half-convert-strict.ll @fcvt_h_si via llvm-extract
Config:-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
Local check:reproduces at 04ca53e65f
Compiler Explorer:not uploaded (over --godbolt-limit or disabled)

Snippet:

; Function Attrs: nounwind strictfp
define half @fcvt_h_si(i16 %a) #0 {
  %1 = call half @llvm.experimental.constrained.sitofp.f16.i16(i16 %a, metadata !"round.dynamic", metadata !"fpexcept.strict")
  ret half %1
}

; Function Attrs: nocallback nofree nosync nounwind strictfp willreturn memory(inaccessiblemem: readwrite)
declare half @llvm.experimental.constrained.sitofp.f16.i16(i16, metadata, metadata) #1

attributes #0 = { nounwind strictfp }
attributes #1 = { nocallback nofree nosync nounwind strictfp willreturn memory(inaccessiblemem: readwrite) }

Reproduce:

llc -mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation -global-isel=0 snippet.ll -o -

Local llc output:

remark: <unknown>:0:0: unable to translate instruction: call llvm.experimental.constrained.sitofp.f16.i16: '  %1 = call half @llvm.experimental.constrained.sitofp.f16.i16(i16 %a, metadata !"round.dynamic", metadata !"fpexcept.strict")' (in function: fcvt_h_si)
warning: Instruction selection used fallback path for fcvt_h_si

Occurrences (68) (first 50):

InputFunctionConfig
half-convert-strict.llfcvt_h_si-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv32 -mattr=+d,+zfh -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv32 -mattr=+d,+zfh -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv32 -mattr=+d,+zfhmin -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv32 -mattr=+d,+zfhmin -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv32 -mattr=+zdinx,+zhinx -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv32 -mattr=+zdinx,+zhinx -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv32 -mattr=+zdinx,+zhinxmin -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv32 -mattr=+zdinx,+zhinxmin -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv32 -mattr=+zfh -verify-machineinstrs -target-abi ilp32f -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv32 -mattr=+zfh -verify-machineinstrs -target-abi ilp32f -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv32 -mattr=+zfhmin -verify-machineinstrs -target-abi ilp32f -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv32 -mattr=+zfhmin -verify-machineinstrs -target-abi ilp32f -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv32 -mattr=+zhinx -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv32 -mattr=+zhinx -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv32 -mattr=+zhinxmin -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv32 -mattr=+zhinxmin -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv64 -mattr=+d,+zfh -verify-machineinstrs -target-abi lp64d -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv64 -mattr=+d,+zfh -verify-machineinstrs -target-abi lp64d -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv64 -mattr=+d,+zfhmin -verify-machineinstrs -target-abi lp64d -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv64 -mattr=+d,+zfhmin -verify-machineinstrs -target-abi lp64d -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv64 -mattr=+zdinx,+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv64 -mattr=+zdinx,+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv64 -mattr=+zdinx,+zhinxmin -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv64 -mattr=+zdinx,+zhinxmin -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv64 -mattr=+zfh -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv64 -mattr=+zfh -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv64 -mattr=+zfhmin -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv64 -mattr=+zfhmin -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si-mtriple=riscv64 -mattr=+zhinxmin -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.llfcvt_h_si_signext-mtriple=riscv64 -mattr=+zhinxmin -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.00363cb292.ll (mutant of half-convert-strict.ll)fcvt_h_si-mtriple=riscv32 -mattr=+zdinx,+zhinxmin -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.01fc61a8ca.ll (mutant of half-convert-strict.ll)fcvt_h_si_signext-mtriple=riscv64 -mattr=+zfh -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
half-convert-strict.0660ba14d7.ll (mutant of half-convert-strict.ll)fcvt_h_si_signext-mtriple=riscv32 -mattr=+zfhmin -verify-machineinstrs -target-abi ilp32f -disable-strictnode-mutation
half-convert-strict.0e1eb79b66.ll (mutant of half-convert-strict.ll)fcvt_h_si-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.0f656d70e9.ll (mutant of half-convert-strict.ll)fcvt_h_si_signext-mtriple=riscv64 -mattr=+d,+zfh -verify-machineinstrs -target-abi lp64d -disable-strictnode-mutation
half-convert-strict.1781da272b.ll (mutant of half-convert-strict.ll)fcvt_h_si_signext-mtriple=riscv32 -mattr=+zdinx,+zhinxmin -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.188a19eaf2.ll (mutant of half-convert-strict.ll)fcvt_h_si-mtriple=riscv32 -mattr=+zfhmin -verify-machineinstrs -target-abi ilp32f -disable-strictnode-mutation
half-convert-strict.1b1b090239.ll (mutant of half-convert-strict.ll)fcvt_h_si_signext-mtriple=riscv64 -mattr=+zdinx,+zhinxmin -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.1cc9e2aa80.ll (mutant of half-convert-strict.ll)fcvt_h_si_signext-mtriple=riscv32 -mattr=+zdinx,+zhinx -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.26561c1961.ll (mutant of half-convert-strict.ll)fcvt_h_si_signext-mtriple=riscv32 -mattr=+zhinx -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.2802ed6d2c.ll (mutant of half-convert-strict.ll)fcvt_h_si-mtriple=riscv32 -mattr=+zhinxmin -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.2a07e998c4.ll (mutant of half-convert-strict.ll)fcvt_h_si-mtriple=riscv32 -mattr=+zfh -verify-machineinstrs -target-abi ilp32f -disable-strictnode-mutation
half-convert-strict.2a824f6d99.ll (mutant of half-convert-strict.ll)fcvt_h_si-mtriple=riscv64 -mattr=+zfh -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
half-convert-strict.3a52dce773.ll (mutant of half-convert-strict.ll)fcvt_h_si-mtriple=riscv64 -mattr=+zdinx,+zhinxmin -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.48f923245b.ll (mutant of half-convert-strict.ll)fcvt_h_si_signext-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.4a816ee0dd.ll (mutant of half-convert-strict.ll)fcvt_h_si_signext-mtriple=riscv32 -mattr=+zhinxmin -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation

Generated 2026-10-15 08:05 UTC.