fallback: legalize: G_INSERT_SUBVECTOR <vscale x 4 x s16>,<8 x s16>

Run:main-bc8218b282-20261015-074651
Kind:fallback
Category:legalize: G_INSERT_SUBVECTOR <vscale x 4 x s16>,<8 x s16>
Occurrences:34 in 6 configs, 2 test files
Snippet from:nontemporal.ll @test_nontemporal_load_v8i16 via llvm-extract
Config:-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+v
Local check:reproduces at bc8218b282
Compiler Explorer:not uploaded (over --godbolt-limit or disabled)

Snippet:

define <8 x i16> @test_nontemporal_load_v8i16(ptr %p) {
  %1 = load <8 x i16>, ptr %p, align 16, !nontemporal !0
  ret <8 x i16> %1
}

!0 = !{i32 1}

Reproduce:

llc -mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+v -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+v -global-isel=0 snippet.ll -o -

Local llc output:

remark: <unknown>:0:0: unable to legalize instruction: %3:_(<vscale x 4 x s16>) = G_INSERT_SUBVECTOR %2:_, %1:_(<8 x s16>), 0 (in function: test_nontemporal_load_v8i16)
warning: Instruction selection used fallback path for test_nontemporal_load_v8i16

Occurrences (34):

InputFunctionConfig
nontemporal.lltest_nontemporal_load_v8i16-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+v
nontemporal.lltest_nontemporal_P1_load_v8i16-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+v
nontemporal.lltest_nontemporal_PALL_load_v8i16-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+v
nontemporal.lltest_nontemporal_S1_load_v8i16-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+v
nontemporal.lltest_nontemporal_ALL_load_v8i16-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+v
nontemporal.lltest_nontemporal_load_v8i16-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+v
nontemporal.lltest_nontemporal_P1_load_v8i16-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+v
nontemporal.lltest_nontemporal_PALL_load_v8i16-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+v
nontemporal.lltest_nontemporal_S1_load_v8i16-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+v
nontemporal.lltest_nontemporal_ALL_load_v8i16-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+v
pr94265.llPR94265-mtriple=riscv32-- -mattr=+v
pr94265.llPR94265-mtriple=riscv32-- -mattr=+zve32x,+zvl128b
pr94265.llPR94265-mtriple=riscv64-- -mattr=+v
pr94265.llPR94265-mtriple=riscv64-- -mattr=+zve32x,+zvl128b
pr94265.111b9cb8f7.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+v
pr94265.1d0d3b3a32.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+v
pr94265.1ffba17f3c.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+zve32x,+zvl128b
pr94265.2684bdd98e.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+v
pr94265.404bbc2352.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+zve32x,+zvl128b
pr94265.4a6a1d4b1e.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+zve32x,+zvl128b
pr94265.60d3afce67.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+v
pr94265.8bea19e9ba.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+v
pr94265.a92d6d18f3.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+zve32x,+zvl128b
pr94265.aa88656872.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+v
pr94265.aeebc06022.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+v
pr94265.b7a4ef2cbb.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+zve32x,+zvl128b
pr94265.bedb191e52.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+zve32x,+zvl128b
pr94265.c176af1fd8.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+zve32x,+zvl128b
pr94265.cd2beacfb7.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+v
pr94265.e3bcb509b6.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+v
pr94265.e922607c3a.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+v
pr94265.eddadeda30.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+zve32x,+zvl128b
pr94265.f6a47f9fcd.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+zve32x,+zvl128b
pr94265.fb34ca28c2.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+zve32x,+zvl128b

Generated 2026-10-15 08:05 UTC.