fallback: translate: call llvm.experimental.constrained.uitofp.f64.i32

Run:explore-04ca53e65f-20261014-114124
Kind:fallback
Category:translate: call llvm.experimental.constrained.uitofp.f64.i32
Occurrences:52 in 8 configs, 2 test files
Snippet from:double-convert-strict.ll @fcvt_d_wu via llvm-extract
Config:-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d
Local check:reproduces at 04ca53e65f
Compiler Explorer:not uploaded (over --godbolt-limit or disabled)

Snippet:

; Function Attrs: nounwind strictfp
define double @fcvt_d_wu(i32 %a) #0 {
  %1 = call double @llvm.experimental.constrained.uitofp.f64.i32(i32 %a, metadata !"round.dynamic", metadata !"fpexcept.strict")
  ret double %1
}

; Function Attrs: nocallback nofree nosync nounwind strictfp willreturn memory(inaccessiblemem: readwrite)
declare double @llvm.experimental.constrained.uitofp.f64.i32(i32, 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 -disable-strictnode-mutation -target-abi=ilp32d -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d -global-isel=0 snippet.ll -o -

Local llc output:

remark: <unknown>:0:0: unable to translate instruction: call llvm.experimental.constrained.uitofp.f64.i32: '  %1 = call double @llvm.experimental.constrained.uitofp.f64.i32(i32 %a, metadata !"round.dynamic", metadata !"fpexcept.strict")' (in function: fcvt_d_wu)
warning: Instruction selection used fallback path for fcvt_d_wu

Occurrences (52) (first 50):

InputFunctionConfig
double-convert-strict.llfcvt_d_wu-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d
double-convert-strict.llfcvt_d_wu_load-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d
double-convert-strict.llfcvt_d_wu_demanded_bits-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d
double-convert-strict.llfcvt_d_wu-mtriple=riscv32 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32
double-convert-strict.llfcvt_d_wu_load-mtriple=riscv32 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32
double-convert-strict.llfcvt_d_wu_demanded_bits-mtriple=riscv32 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32
double-convert-strict.llfcvt_d_wu-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation
double-convert-strict.llfcvt_d_wu_load-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation
double-convert-strict.llfcvt_d_wu_demanded_bits-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation
double-convert-strict.llfcvt_d_wu-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d
double-convert-strict.llfcvt_d_wu_load-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d
double-convert-strict.llfcvt_d_wu_demanded_bits-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d
double-convert-strict.llfcvt_d_wu-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64
double-convert-strict.llfcvt_d_wu_load-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64
double-convert-strict.llfcvt_d_wu_demanded_bits-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64
double-convert-strict.llfcvt_d_wu-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation
double-convert-strict.llfcvt_d_wu_load-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation
double-convert-strict.llfcvt_d_wu_demanded_bits-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation
rv64d-double-convert-strict.lluitofp_aext_i32_to_f64-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation
rv64d-double-convert-strict.lluitofp_sext_i32_to_f64-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation
rv64d-double-convert-strict.lluitofp_zext_i32_to_f64-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation
rv64d-double-convert-strict.lluitofp_aext_i32_to_f64-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation
rv64d-double-convert-strict.lluitofp_sext_i32_to_f64-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation
rv64d-double-convert-strict.lluitofp_zext_i32_to_f64-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation
double-convert-strict.3544c08406.ll (mutant of double-convert-strict.ll)fcvt_d_wu-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d
double-convert-strict.3544c08406.ll (mutant of double-convert-strict.ll)fcvt_d_wu_demanded_bits-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d
double-convert-strict.457d2fe68d.ll (mutant of double-convert-strict.ll)fcvt_d_wu-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation
double-convert-strict.457d2fe68d.ll (mutant of double-convert-strict.ll)fcvt_d_wu_demanded_bits-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation
double-convert-strict.6618e80390.ll (mutant of double-convert-strict.ll)fcvt_d_wu_load-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation
double-convert-strict.67304d5d84.ll (mutant of double-convert-strict.ll)fcvt_d_wu_load-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64
double-convert-strict.764b05c51c.ll (mutant of double-convert-strict.ll)fcvt_d_wu-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation
double-convert-strict.764b05c51c.ll (mutant of double-convert-strict.ll)fcvt_d_wu_demanded_bits-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation
double-convert-strict.78ddb5c751.ll (mutant of double-convert-strict.ll)fcvt_d_wu-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d
double-convert-strict.78ddb5c751.ll (mutant of double-convert-strict.ll)fcvt_d_wu_demanded_bits-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d
double-convert-strict.aaf6abcc84.ll (mutant of double-convert-strict.ll)fcvt_d_wu-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64
double-convert-strict.aaf6abcc84.ll (mutant of double-convert-strict.ll)fcvt_d_wu_demanded_bits-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64
double-convert-strict.c925d78516.ll (mutant of double-convert-strict.ll)fcvt_d_wu-mtriple=riscv32 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32
double-convert-strict.c925d78516.ll (mutant of double-convert-strict.ll)fcvt_d_wu_demanded_bits-mtriple=riscv32 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32
double-convert-strict.cb4427eb4d.ll (mutant of double-convert-strict.ll)fcvt_d_wu_load-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d
double-convert-strict.d958952226.ll (mutant of double-convert-strict.ll)fcvt_d_wu_load-mtriple=riscv32 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32
double-convert-strict.daa9b94ca7.ll (mutant of double-convert-strict.ll)fcvt_d_wu_load-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation
double-convert-strict.f63bbb3ff7.ll (mutant of double-convert-strict.ll)fcvt_d_wu_load-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d
rv64d-double-convert-strict.561576e1e9.ll (mutant of rv64d-double-convert-strict.ll)uitofp_zext_i32_to_f64-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation
rv64d-double-convert-strict.6b1e2d0edc.ll (mutant of rv64d-double-convert-strict.ll)uitofp_aext_i32_to_f64-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation
rv64d-double-convert-strict.6d8af099f6.ll (mutant of rv64d-double-convert-strict.ll)uitofp_aext_i32_to_f64-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation
rv64d-double-convert-strict.894127f72f.ll (mutant of rv64d-double-convert-strict.ll)uitofp_zext_i32_to_f64-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation
rv64d-double-convert-strict.a2875ab598.ll (mutant of rv64d-double-convert-strict.ll)uitofp_aext_i32_to_f64-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation
rv64d-double-convert-strict.a4a8be3644.ll (mutant of rv64d-double-convert-strict.ll)uitofp_sext_i32_to_f64-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation
rv64d-double-convert-strict.a4a8be3644.ll (mutant of rv64d-double-convert-strict.ll)uitofp_zext_i32_to_f64-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation
rv64d-double-convert-strict.e8165fb7c7.ll (mutant of rv64d-double-convert-strict.ll)uitofp_aext_i32_to_f64-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation

Generated 2026-10-15 08:05 UTC.