fallback: legalize: G_FCANONICALIZE <4 x s16>

Run:explore-bc8218b282-20261015-075519
Kind:fallback
Category:legalize: G_FCANONICALIZE <4 x s16>
Occurrences:33 in 11 configs, 1 test files
Snippet from:fp-fcanonicalize.ll @fcanonicalize_v4f16 via llvm-extract
Config:--mtriple=riscv32
Local check:reproduces at bc8218b282
Compiler Explorer:not uploaded (over --godbolt-limit or disabled)

Snippet:

define <4 x half> @fcanonicalize_v4f16(<4 x half> %x) {
  %z = call <4 x half> @llvm.canonicalize.v4f16(<4 x half> %x)
  ret <4 x half> %z
}

; Function Attrs: nocallback nocreateundeforpoison nofree nosync nounwind speculatable willreturn memory(none)
declare <4 x half> @llvm.canonicalize.v4f16(<4 x half>) #0

attributes #0 = { nocallback nocreateundeforpoison nofree nosync nounwind speculatable willreturn memory(none) }

Reproduce:

llc --mtriple=riscv32 -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc --mtriple=riscv32 -global-isel=0 snippet.ll -o -

Local llc output:

remark: <unknown>:0:0: unable to legalize instruction: %3:_(<4 x s16>) = G_FCANONICALIZE %0:_ (in function: fcanonicalize_v4f16)
warning: Instruction selection used fallback path for fcanonicalize_v4f16

Occurrences (33):

InputFunctionConfig
fp-fcanonicalize.llfcanonicalize_v4f16--mtriple=riscv32
fp-fcanonicalize.llfcanonicalize_v4f16_nnan--mtriple=riscv32
fp-fcanonicalize.llfcanonicalize_v4f16--mtriple=riscv32 --mattr=+d,+zfh
fp-fcanonicalize.llfcanonicalize_v4f16_nnan--mtriple=riscv32 --mattr=+d,+zfh
fp-fcanonicalize.llfcanonicalize_v4f16--mtriple=riscv32 --mattr=+d,-zfh
fp-fcanonicalize.llfcanonicalize_v4f16_nnan--mtriple=riscv32 --mattr=+d,-zfh
fp-fcanonicalize.llfcanonicalize_v4f16--mtriple=riscv64
fp-fcanonicalize.llfcanonicalize_v4f16_nnan--mtriple=riscv64
fp-fcanonicalize.llfcanonicalize_v4f16--mtriple=riscv64 --mattr=+d,+zfh
fp-fcanonicalize.llfcanonicalize_v4f16_nnan--mtriple=riscv64 --mattr=+d,+zfh
fp-fcanonicalize.llfcanonicalize_v4f16--mtriple=riscv64 --mattr=+d,-zfh
fp-fcanonicalize.llfcanonicalize_v4f16_nnan--mtriple=riscv64 --mattr=+d,-zfh
fp-fcanonicalize.llfcanonicalize_v4f16-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs
fp-fcanonicalize.llfcanonicalize_v4f16_nnan-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs
fp-fcanonicalize.llfcanonicalize_v4f16-mtriple=riscv32 -mattr=+zhinx -target-abi=ilp32 -verify-machineinstrs
fp-fcanonicalize.llfcanonicalize_v4f16_nnan-mtriple=riscv32 -mattr=+zhinx -target-abi=ilp32 -verify-machineinstrs
fp-fcanonicalize.llfcanonicalize_v4f16-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs
fp-fcanonicalize.llfcanonicalize_v4f16_nnan-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs
fp-fcanonicalize.llfcanonicalize_v4f16-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs
fp-fcanonicalize.llfcanonicalize_v4f16_nnan-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs
fp-fcanonicalize.llfcanonicalize_v4f16-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs
fp-fcanonicalize.llfcanonicalize_v4f16_nnan-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs
fp-fcanonicalize.0d14b0c975.ll (mutant of fp-fcanonicalize.ll)fcanonicalize_v4f16_nnan--mtriple=riscv32
fp-fcanonicalize.3a9a889517.ll (mutant of fp-fcanonicalize.ll)fcanonicalize_v4f16_nnan-mtriple=riscv64 -mattr=+zdinx -verify-machineinstrs
fp-fcanonicalize.489bc7a4c2.ll (mutant of fp-fcanonicalize.ll)fcanonicalize_v4f16_nnan--mtriple=riscv64 --mattr=+d,-zfh
fp-fcanonicalize.50a3e79357.ll (mutant of fp-fcanonicalize.ll)fcanonicalize_v4f16_nnan--mtriple=riscv32 --mattr=+d,-zfh
fp-fcanonicalize.519ac49c7f.ll (mutant of fp-fcanonicalize.ll)fcanonicalize_v4f16_nnan-mtriple=riscv32 -mattr=+zhinx -target-abi=ilp32 -verify-machineinstrs
fp-fcanonicalize.5bf176f372.ll (mutant of fp-fcanonicalize.ll)fcanonicalize_v4f16_nnan--mtriple=riscv64
fp-fcanonicalize.63376de87e.ll (mutant of fp-fcanonicalize.ll)fcanonicalize_v4f16_nnan-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs
fp-fcanonicalize.6db34a6e44.ll (mutant of fp-fcanonicalize.ll)fcanonicalize_v4f16_nnan--mtriple=riscv64 --mattr=+d,+zfh
fp-fcanonicalize.7b17df985d.ll (mutant of fp-fcanonicalize.ll)fcanonicalize_v4f16_nnan-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs
fp-fcanonicalize.ac3b60ca5d.ll (mutant of fp-fcanonicalize.ll)fcanonicalize_v4f16_nnan--mtriple=riscv32 --mattr=+d,+zfh
fp-fcanonicalize.ef84762e32.ll (mutant of fp-fcanonicalize.ll)fcanonicalize_v4f16_nnan-mtriple=riscv64 -mattr=+zhinx -verify-machineinstrs

Generated 2026-10-15 08:05 UTC.