fallback: translate: call llvm.experimental.constrained.fptoui.i32.f32

Run:main-04ca53e65f-20261014-113325
Kind:fallback
Category:translate: call llvm.experimental.constrained.fptoui.i32.f32
Occurrences:49 in 9 configs, 3 test files
Snippet from:float-convert-strict.ll @fcvt_wu_s via llvm-extract
Config:-mtriple=riscv32 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32f
Local check:reproduces at 04ca53e65f
Compiler Explorer:not uploaded (over --godbolt-limit or disabled)

Snippet:

; Function Attrs: nounwind strictfp
define i32 @fcvt_wu_s(float %a) #0 {
  %1 = call i32 @llvm.experimental.constrained.fptoui.i32.f32(float %a, metadata !"fpexcept.strict")
  ret i32 %1
}

; Function Attrs: nocallback nofree nosync nounwind strictfp willreturn memory(inaccessiblemem: readwrite)
declare i32 @llvm.experimental.constrained.fptoui.i32.f32(float, metadata) #1

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

Reproduce:

llc -mtriple=riscv32 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32f -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv32 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32f -global-isel=0 snippet.ll -o -

Local llc output:

remark: <unknown>:0:0: unable to translate instruction: call llvm.experimental.constrained.fptoui.i32.f32: '  %1 = call i32 @llvm.experimental.constrained.fptoui.i32.f32(float %a, metadata !"fpexcept.strict")' (in function: fcvt_wu_s)
warning: Instruction selection used fallback path for fcvt_wu_s

Occurrences (49):

InputFunctionConfig
float-convert-strict.llfcvt_wu_s-mtriple=riscv32 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32f
float-convert-strict.llfcvt_wu_s_multiple_use-mtriple=riscv32 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32f
float-convert-strict.llfcvt_wu_s-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32
float-convert-strict.llfcvt_wu_s_multiple_use-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32
float-convert-strict.llfcvt_wu_s-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation
float-convert-strict.llfcvt_wu_s_multiple_use-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation
float-convert-strict.llfcvt_wu_s-mtriple=riscv64 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64f
float-convert-strict.llfcvt_wu_s_multiple_use-mtriple=riscv64 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64f
float-convert-strict.llfcvt_wu_s-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64
float-convert-strict.llfcvt_wu_s_multiple_use-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64
float-convert-strict.llfcvt_wu_s-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation
float-convert-strict.llfcvt_wu_s_multiple_use-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.llaext_fptoui-mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.llsext_fptoui-mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.llzext_fptoui-mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.llaext_fptoui-mtriple=riscv64 -mattr=+zfinx -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.llsext_fptoui-mtriple=riscv64 -mattr=+zfinx -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.llzext_fptoui-mtriple=riscv64 -mattr=+zfinx -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation
rv64i-single-softfloat.llstrict_fp32_to_ui32-mtriple=riscv64 -verify-machineinstrs
float-convert-strict.0698db6066.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation
float-convert-strict.0799837a79.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv32 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32f
float-convert-strict.10b8488a56.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv64 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64f
float-convert-strict.110d4b65d4.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv32 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32f
float-convert-strict.187aa0c8e8.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation
float-convert-strict.1ada0c9e58.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32
float-convert-strict.1efce73b8d.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv64 -verify-machineinstrs -disable-strictnode-mutation
float-convert-strict.24e08d7502.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation
float-convert-strict.33f1d4c5db.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32
float-convert-strict.5348af5964.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation
float-convert-strict.5c1718f0e5.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64
float-convert-strict.5f2750a10e.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32
float-convert-strict.64e4f776e6.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv32 -verify-machineinstrs -disable-strictnode-mutation
float-convert-strict.801eeb131c.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv64 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64f
float-convert-strict.85fd3599db.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64
float-convert-strict.a8e56acd38.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv32 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=ilp32f
float-convert-strict.d27543ff5b.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64
float-convert-strict.f89a7752d9.ll (mutant of float-convert-strict.ll)fcvt_wu_s_multiple_use-mtriple=riscv64 -mattr=+f -verify-machineinstrs -disable-strictnode-mutation -target-abi=lp64f
rv64f-float-convert-strict.00f1bd0ade.ll (mutant of rv64f-float-convert-strict.ll)aext_fptoui-mtriple=riscv64 -mattr=+zfinx -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.0de76d2036.ll (mutant of rv64f-float-convert-strict.ll)sext_fptoui-mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.396a6f8b42.ll (mutant of rv64f-float-convert-strict.ll)sext_fptoui-mtriple=riscv64 -mattr=+zfinx -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.466f0550b4.ll (mutant of rv64f-float-convert-strict.ll)zext_fptoui-mtriple=riscv64 -mattr=+zfinx -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.4e787e20ac.ll (mutant of rv64f-float-convert-strict.ll)aext_fptoui-mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.6d21fd98f8.ll (mutant of rv64f-float-convert-strict.ll)zext_fptoui-mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.c268168a4b.ll (mutant of rv64f-float-convert-strict.ll)zext_fptoui-mtriple=riscv64 -mattr=+zfinx -target-abi=lp64 -verify-machineinstrs -disable-strictnode-mutation
rv64f-float-convert-strict.cd166185e4.ll (mutant of rv64f-float-convert-strict.ll)zext_fptoui-mtriple=riscv64 -mattr=+f -target-abi=lp64f -verify-machineinstrs -disable-strictnode-mutation
rv64i-single-softfloat.13f0fcfa63.ll (mutant of rv64i-single-softfloat.ll)strict_fp32_to_ui32-mtriple=riscv64 -verify-machineinstrs
rv64i-single-softfloat.272524de68.ll (mutant of rv64i-single-softfloat.ll)strict_fp32_to_ui32-mtriple=riscv64 -verify-machineinstrs
rv64i-single-softfloat.40e5bdc984.ll (mutant of rv64i-single-softfloat.ll)strict_fp32_to_ui32-mtriple=riscv64 -verify-machineinstrs
rv64i-single-softfloat.e7166804bb.ll (mutant of rv64i-single-softfloat.ll)strict_fp32_to_ui32-mtriple=riscv64 -verify-machineinstrs

Generated 2026-10-15 08:05 UTC.