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

Run:	explore-04ca53e65f-20261014-114124
Kind:	fallback
Category:	translate: call llvm.experimental.constrained.sitofp.f64.i32
Occurrences:	38 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 04ca53e65f
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 (38):

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.11774f4e25.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.2cb273134a.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.3fd0db707c.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.4c00df2813.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.4ee89220cf.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.512e76b5f7.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.78e22542b9.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.7ee70dc59e.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation`
double-convert-strict.a3697217dc.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.c88aec8138.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.cb04fc72ac.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.e7a30c3710.ll (mutant of double-convert-strict.ll)	fcvt_d_w_load	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64d`
rv64d-double-convert-strict.a2875ab598.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.e8165fb7c7.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`

Generated 2026-10-15 08:05 UTC.