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

Run:explore-04ca53e65f-20261014-114124
Kind:fallback
Category:legalize: G_INSERT_SUBVECTOR <vscale x 4 x s16>,<8 x s16>
Occurrences:36 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 04ca53e65f
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 (36):

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
nontemporal.6518a6d730.ll (mutant of nontemporal.ll)test_nontemporal_load_v8i16-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+v
nontemporal.b2eb802c85.ll (mutant of nontemporal.ll)test_nontemporal_load_v8i16-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+v
pr94265.0217686a36.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+v
pr94265.18b51a445c.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+zve32x,+zvl128b
pr94265.18c5fdd5c5.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+zve32x,+zvl128b
pr94265.1c72ea5198.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+v
pr94265.3ef1aecb0f.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+v
pr94265.46d1de6448.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+v
pr94265.5dbd22873e.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+zve32x,+zvl128b
pr94265.68b2d8c9b4.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+v
pr94265.6d51cb8f9d.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+zve32x,+zvl128b
pr94265.74aac16c1b.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+v
pr94265.7ac4e21e04.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+zve32x,+zvl128b
pr94265.7b9a7e3c98.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+v
pr94265.82a895f492.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+zve32x,+zvl128b
pr94265.8f59ca73e8.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+zve32x,+zvl128b
pr94265.ad7a2f2abb.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+zve32x,+zvl128b
pr94265.c9aa45a149.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+v
pr94265.ce3d2843e1.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+v
pr94265.dc0fdfe33b.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+zve32x,+zvl128b
pr94265.e3e2ea04d3.ll (mutant of pr94265.ll)PR94265-mtriple=riscv64-- -mattr=+zve32x,+zvl128b
pr94265.ed67da3980.ll (mutant of pr94265.ll)PR94265-mtriple=riscv32-- -mattr=+v

Generated 2026-10-15 08:05 UTC.