fallback: translate: call llvm.experimental.constrained.fptosi.i32.f16

Run:main-bc8218b282-20261015-074651
Kind:fallback
Category:translate: call llvm.experimental.constrained.fptosi.i32.f16
Occurrences:79 in 17 configs, 3 test files
Snippet from:half-convert-strict.ll @fcvt_w_h via llvm-extract
Config:-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
Local check:reproduces at bc8218b282
Compiler Explorer:not uploaded (over --godbolt-limit or disabled)

Snippet:

; Function Attrs: nounwind strictfp
define i32 @fcvt_w_h(half %a) #0 {
  %1 = call i32 @llvm.experimental.constrained.fptosi.i32.f16(half %a, metadata !"fpexcept.strict")
  ret i32 %1
}

; Function Attrs: nocallback nofree nosync nounwind strictfp willreturn memory(inaccessiblemem: readwrite)
declare i32 @llvm.experimental.constrained.fptosi.i32.f16(half, 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.fptosi.i32.f16: '  %1 = call i32 @llvm.experimental.constrained.fptosi.i32.f16(half %a, metadata !"fpexcept.strict")' (in function: fcvt_w_h)
warning: Instruction selection used fallback path for fcvt_w_h

Occurrences (79) (first 50):

InputFunctionConfig
half-convert-strict.llfcvt_w_h-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv32 -mattr=+d,+zfh -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv32 -mattr=+d,+zfhmin -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv32 -mattr=+zdinx,+zhinx -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv32 -mattr=+zdinx,+zhinxmin -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv32 -mattr=+zfh -verify-machineinstrs -target-abi ilp32f -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv32 -mattr=+zfhmin -verify-machineinstrs -target-abi ilp32f -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv32 -mattr=+zhinx -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv32 -mattr=+zhinxmin -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv64 -mattr=+d,+zfh -verify-machineinstrs -target-abi lp64d -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv64 -mattr=+d,+zfhmin -verify-machineinstrs -target-abi lp64d -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv64 -mattr=+zdinx,+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv64 -mattr=+zdinx,+zhinxmin -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv64 -mattr=+zfh -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv64 -mattr=+zfhmin -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.llfcvt_w_h-mtriple=riscv64 -mattr=+zhinxmin -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
rv64zfh-half-convert-strict.llaext_fptosi-mtriple=riscv64 -mattr=+zfh -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
rv64zfh-half-convert-strict.llsext_fptosi-mtriple=riscv64 -mattr=+zfh -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
rv64zfh-half-convert-strict.llzext_fptosi-mtriple=riscv64 -mattr=+zfh -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
rv64zfh-half-convert-strict.llaext_fptosi-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
rv64zfh-half-convert-strict.llsext_fptosi-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
rv64zfh-half-convert-strict.llzext_fptosi-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
rv64zfhmin-half-convert-strict.llaext_fptosi-mtriple=riscv64 -mattr=+zfhmin -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
rv64zfhmin-half-convert-strict.llsext_fptosi-mtriple=riscv64 -mattr=+zfhmin -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
rv64zfhmin-half-convert-strict.llzext_fptosi-mtriple=riscv64 -mattr=+zfhmin -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
rv64zfhmin-half-convert-strict.llaext_fptosi-mtriple=riscv64 -mattr=+zhinxmin -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
rv64zfhmin-half-convert-strict.llsext_fptosi-mtriple=riscv64 -mattr=+zhinxmin -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
rv64zfhmin-half-convert-strict.llzext_fptosi-mtriple=riscv64 -mattr=+zhinxmin -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.140c8fe48c.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv32 -mattr=+zfhmin -verify-machineinstrs -target-abi ilp32f -disable-strictnode-mutation
half-convert-strict.25ba6d776b.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv32 -mattr=+d,+zfh -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.2c9cace446.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.3240536919.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv32 -mattr=+d,+zfhmin -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.36c90b5d6b.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv32 -mattr=+zfh -verify-machineinstrs -target-abi ilp32f -disable-strictnode-mutation
half-convert-strict.3e3173c868.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv64 -mattr=+d,+zfh -verify-machineinstrs -target-abi lp64d -disable-strictnode-mutation
half-convert-strict.43ba67b3d6.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv32 -mattr=+zhinx -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.5ebdd19118.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.5f30e13935.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv64 -mattr=+d,+zfhmin -verify-machineinstrs -target-abi lp64d -disable-strictnode-mutation
half-convert-strict.6055c70312.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv64 -mattr=+d,+zfhmin -verify-machineinstrs -target-abi lp64d -disable-strictnode-mutation
half-convert-strict.636a7d2e56.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv64 -mattr=+zdinx,+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.6f640bb3b6.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv32 -mattr=+zfhmin -verify-machineinstrs -target-abi ilp32f -disable-strictnode-mutation
half-convert-strict.71f1c1b182.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv64 -mattr=+zdinx,+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.7a27e11b0e.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv64 -mattr=+zfhmin -verify-machineinstrs -target-abi lp64f -disable-strictnode-mutation
half-convert-strict.8195db01b4.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv32 -mattr=+zdinx,+zhinxmin -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.86d3ebe7e0.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv32 -mattr=+d,+zfhmin -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation
half-convert-strict.92fd935876.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv32 -mattr=+zdinx,+zhinx -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.981300a2bc.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv64 -mattr=+zhinxmin -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.a48fceb3ed.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv32 -mattr=+zhinxmin -verify-machineinstrs -target-abi ilp32 -disable-strictnode-mutation
half-convert-strict.af9c10ed2e.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs -target-abi lp64 -disable-strictnode-mutation
half-convert-strict.b9fb8c387c.ll (mutant of half-convert-strict.ll)fcvt_w_h-mtriple=riscv32 -mattr=+d,+zfh -verify-machineinstrs -target-abi ilp32d -disable-strictnode-mutation

Generated 2026-10-15 08:05 UTC.