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

Run:	explore-bc8218b282-20261015-075519
Kind:	fallback
Category:	translate: call llvm.experimental.constrained.sitofp.f64.i32
Occurrences:	48 in 8 configs, 2 test files
Snippet from:	double-convert-strict.ll @fcvt_d_w via llvm-extract
Config:	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d`
Local check:	reproduces at bc8218b282
Compiler Explorer:	not uploaded (over --godbolt-limit or disabled)

Snippet:

; Function Attrs: nounwind strictfp
define double @fcvt_d_w(i32 %a) #0 {
  %1 = call double @llvm.experimental.constrained.sitofp.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.sitofp.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.sitofp.f64.i32: '  %1 = call double @llvm.experimental.constrained.sitofp.f64.i32(i32 %a, metadata !"round.dynamic", metadata !"fpexcept.strict")' (in function: fcvt_d_w)
warning: Instruction selection used fallback path for fcvt_d_w

Occurrences (48):

Input	Function	Config
double-convert-strict.ll	fcvt_d_w	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d`
double-convert-strict.ll	fcvt_d_w_load	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d`
double-convert-strict.ll	fcvt_d_w_demanded_bits	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d`
double-convert-strict.ll	fcvt_d_w	`-mtriple=riscv32 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32`
double-convert-strict.ll	fcvt_d_w_load	`-mtriple=riscv32 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32`
double-convert-strict.ll	fcvt_d_w_demanded_bits	`-mtriple=riscv32 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32`
double-convert-strict.ll	fcvt_d_w	`-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.ll	fcvt_d_w_load	`-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.ll	fcvt_d_w_demanded_bits	`-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.ll	fcvt_d_w	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d`
double-convert-strict.ll	fcvt_d_w_load	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d`
double-convert-strict.ll	fcvt_d_w_demanded_bits	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d`
double-convert-strict.ll	fcvt_d_w	`-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64`
double-convert-strict.ll	fcvt_d_w_load	`-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64`
double-convert-strict.ll	fcvt_d_w_demanded_bits	`-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64`
double-convert-strict.ll	fcvt_d_w	`-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.ll	fcvt_d_w_load	`-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.ll	fcvt_d_w_demanded_bits	`-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation`
rv64d-double-convert-strict.ll	sitofp_aext_i32_to_f64	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation`
rv64d-double-convert-strict.ll	sitofp_sext_i32_to_f64	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation`
rv64d-double-convert-strict.ll	sitofp_zext_i32_to_f64	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation`
rv64d-double-convert-strict.ll	sitofp_aext_i32_to_f64	`-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation`
rv64d-double-convert-strict.ll	sitofp_sext_i32_to_f64	`-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation`
rv64d-double-convert-strict.ll	sitofp_zext_i32_to_f64	`-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation`
double-convert-strict.05f060fc5a.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64`
double-convert-strict.0ea283144c.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.118891efd6.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d`
double-convert-strict.2292561006.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv32 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32`
double-convert-strict.2cb5e6b6c9.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64`
double-convert-strict.3c7b62f9b6.ll (mutant of double-convert-strict.ll)	fcvt_d_w	`-mtriple=riscv32 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32`
double-convert-strict.3fc71af9fb.ll (mutant of double-convert-strict.ll)	fcvt_d_w	`-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64`
double-convert-strict.59701f52e0.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.5d84abbb36.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d`
double-convert-strict.6fbe4c988b.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d`
double-convert-strict.89ca7c7fe9.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.ab5b168141.ll (mutant of double-convert-strict.ll)	fcvt_d_w	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d`
double-convert-strict.b8bf72326d.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d`
double-convert-strict.c748783071.ll (mutant of double-convert-strict.ll)	fcvt_d_w	`-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.cfd3e74e91.ll (mutant of double-convert-strict.ll)	fcvt_d_w	`-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.dbd1073ee4.ll (mutant of double-convert-strict.ll)	fcvt_d_w	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32d`
double-convert-strict.dc95b6025f.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv32 -mattr=+zdinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32`
double-convert-strict.e00785df5e.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation`
rv64d-double-convert-strict.50707da8a5.ll (mutant of rv64d-double-convert-strict.ll)	sitofp_aext_i32_to_f64	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation`
rv64d-double-convert-strict.b362a2789e.ll (mutant of rv64d-double-convert-strict.ll)	sitofp_aext_i32_to_f64	`-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation`
rv64d-double-convert-strict.e0d20877d4.ll (mutant of rv64d-double-convert-strict.ll)	sitofp_zext_i32_to_f64	`-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation`
rv64d-double-convert-strict.e41c48bb68.ll (mutant of rv64d-double-convert-strict.ll)	sitofp_aext_i32_to_f64	`-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs -target-abi=lp64 -disable-strictnode-mutation`
rv64d-double-convert-strict.edfd216333.ll (mutant of rv64d-double-convert-strict.ll)	sitofp_aext_i32_to_f64	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation`
rv64d-double-convert-strict.ef713bcbe1.ll (mutant of rv64d-double-convert-strict.ll)	sitofp_zext_i32_to_f64	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d -disable-strictnode-mutation`

Generated 2026-10-15 08:05 UTC.