fallback: legalize: G_SREM <4 x s16>

Run:main-04ca53e65f-20261014-113325
Kind:fallback
Category:legalize: G_SREM <4 x s16>
Occurrences:42 in 5 configs, 4 test files
Snippet from:rvp-simd-64.ll @test_psrem_h via llvm-extract
Config:-mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs
Local check:reproduces at 04ca53e65f
Compiler Explorer:not uploaded (over --godbolt-limit or disabled)

Snippet:

define <4 x i16> @test_psrem_h(<4 x i16> %a, <4 x i16> %b) {
  %res = srem <4 x i16> %a, %b
  ret <4 x i16> %res
}

Reproduce:

llc -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs -global-isel=0 snippet.ll -o -

Local llc output:

remark: <unknown>:0:0: unable to legalize instruction: %2:_(<4 x s16>) = G_SREM %0:_, %1:_ (in function: test_psrem_h)
warning: Instruction selection used fallback path for test_psrem_h

Occurrences (42):

InputFunctionConfig
rvp-simd-64.lltest_psrem_h-mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs
srem-vector-lkk.llfold_srem_vec_1-mtriple=riscv32 -mattr=+m -verify-machineinstrs
srem-vector-lkk.llfold_srem_vec_2-mtriple=riscv32 -mattr=+m -verify-machineinstrs
srem-vector-lkk.lldont_fold_srem_power_of_two-mtriple=riscv32 -mattr=+m -verify-machineinstrs
srem-vector-lkk.lldont_fold_srem_one-mtriple=riscv32 -mattr=+m -verify-machineinstrs
srem-vector-lkk.lldont_fold_urem_i16_smax-mtriple=riscv32 -mattr=+m -verify-machineinstrs
srem-vector-lkk.llfold_srem_vec_1-mtriple=riscv32 -verify-machineinstrs
srem-vector-lkk.llfold_srem_vec_2-mtriple=riscv32 -verify-machineinstrs
srem-vector-lkk.lldont_fold_srem_power_of_two-mtriple=riscv32 -verify-machineinstrs
srem-vector-lkk.lldont_fold_srem_one-mtriple=riscv32 -verify-machineinstrs
srem-vector-lkk.lldont_fold_urem_i16_smax-mtriple=riscv32 -verify-machineinstrs
srem-vector-lkk.llfold_srem_vec_1-mtriple=riscv64 -mattr=+m -verify-machineinstrs
srem-vector-lkk.llfold_srem_vec_2-mtriple=riscv64 -mattr=+m -verify-machineinstrs
srem-vector-lkk.lldont_fold_srem_power_of_two-mtriple=riscv64 -mattr=+m -verify-machineinstrs
srem-vector-lkk.lldont_fold_srem_one-mtriple=riscv64 -mattr=+m -verify-machineinstrs
srem-vector-lkk.lldont_fold_urem_i16_smax-mtriple=riscv64 -mattr=+m -verify-machineinstrs
srem-vector-lkk.llfold_srem_vec_1-mtriple=riscv64 -verify-machineinstrs
srem-vector-lkk.llfold_srem_vec_2-mtriple=riscv64 -verify-machineinstrs
srem-vector-lkk.lldont_fold_srem_power_of_two-mtriple=riscv64 -verify-machineinstrs
srem-vector-lkk.lldont_fold_srem_one-mtriple=riscv64 -verify-machineinstrs
srem-vector-lkk.lldont_fold_urem_i16_smax-mtriple=riscv64 -verify-machineinstrs
rvp-narrowing-zip.9bc4e20bda.ll (mutant of rvp-narrowing-zip.ll)test_pnzip_v4i16-mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs
srem-vector-lkk.11b78e2aed.ll (mutant of srem-vector-lkk.ll)dont_fold_srem_power_of_two-mtriple=riscv64 -mattr=+m -verify-machineinstrs
srem-vector-lkk.506445107e.ll (mutant of srem-vector-lkk.ll)dont_fold_srem_one-mtriple=riscv32 -verify-machineinstrs
srem-vector-lkk.7431f79322.ll (mutant of srem-vector-lkk.ll)dont_fold_srem_one-mtriple=riscv64 -verify-machineinstrs
srem-vector-lkk.76ab0dc271.ll (mutant of srem-vector-lkk.ll)dont_fold_srem_power_of_two-mtriple=riscv32 -mattr=+m -verify-machineinstrs
srem-vector-lkk.7b8b07aeff.ll (mutant of srem-vector-lkk.ll)fold_srem_vec_1-mtriple=riscv64 -mattr=+m -verify-machineinstrs
srem-vector-lkk.7b8b07aeff.ll (mutant of srem-vector-lkk.ll)dont_fold_urem_i16_smax-mtriple=riscv64 -mattr=+m -verify-machineinstrs
srem-vector-lkk.84e0a74845.ll (mutant of srem-vector-lkk.ll)fold_srem_vec_1-mtriple=riscv32 -mattr=+m -verify-machineinstrs
srem-vector-lkk.84e0a74845.ll (mutant of srem-vector-lkk.ll)dont_fold_urem_i16_smax-mtriple=riscv32 -mattr=+m -verify-machineinstrs
srem-vector-lkk.87949b4816.ll (mutant of srem-vector-lkk.ll)dont_fold_srem_one-mtriple=riscv32 -mattr=+m -verify-machineinstrs
srem-vector-lkk.93b9637daa.ll (mutant of srem-vector-lkk.ll)fold_srem_vec_1-mtriple=riscv64 -verify-machineinstrs
srem-vector-lkk.93b9637daa.ll (mutant of srem-vector-lkk.ll)dont_fold_urem_i16_smax-mtriple=riscv64 -verify-machineinstrs
srem-vector-lkk.96b7301324.ll (mutant of srem-vector-lkk.ll)dont_fold_srem_power_of_two-mtriple=riscv64 -verify-machineinstrs
srem-vector-lkk.9943ae4273.ll (mutant of srem-vector-lkk.ll)dont_fold_srem_power_of_two-mtriple=riscv32 -verify-machineinstrs
srem-vector-lkk.b42ba49e25.ll (mutant of srem-vector-lkk.ll)fold_srem_vec_1-mtriple=riscv32 -verify-machineinstrs
srem-vector-lkk.b42ba49e25.ll (mutant of srem-vector-lkk.ll)dont_fold_urem_i16_smax-mtriple=riscv32 -verify-machineinstrs
srem-vector-lkk.ce162b9235.ll (mutant of srem-vector-lkk.ll)dont_fold_srem_one-mtriple=riscv64 -mattr=+m -verify-machineinstrs
urem-vector-lkk.68fe4a4df3.ll (mutant of urem-vector-lkk.ll)dont_fold_urem_i16_smax-mtriple=riscv64 -mattr=+m -verify-machineinstrs
urem-vector-lkk.6d5a92797c.ll (mutant of urem-vector-lkk.ll)dont_fold_urem_i16_smax-mtriple=riscv64 -verify-machineinstrs
urem-vector-lkk.b639f0b935.ll (mutant of urem-vector-lkk.ll)dont_fold_urem_i16_smax-mtriple=riscv32 -verify-machineinstrs
urem-vector-lkk.dc8757378d.ll (mutant of urem-vector-lkk.ll)dont_fold_urem_i16_smax-mtriple=riscv32 -mattr=+m -verify-machineinstrs

Generated 2026-10-15 08:05 UTC.