fallback: legalize: G_LOAD <16 x s8>,p0

Run:	explore-bc8218b282-20261015-075519
Kind:	fallback
Category:	legalize: G_LOAD <16 x s8>,p0
Occurrences:	48 in 8 configs, 3 test files
Snippet from:	nontemporal.ll @test_nontemporal_load_v16i8 via llvm-extract
Config:	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh`
Local check:	reproduces at bc8218b282
Compiler Explorer:	not uploaded (over --godbolt-limit or disabled)

Snippet:

define <16 x i8> @test_nontemporal_load_v16i8(ptr %p) {
  %1 = load <16 x i8>, ptr %p, align 16, !nontemporal !0
  ret <16 x i8> %1
}

!0 = !{i32 1}

Reproduce:

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

Local llc output:

remark: <unknown>:0:0: unable to legalize instruction: %2:_(<16 x s8>) = G_LOAD %0:_(p0) :: (non-temporal "riscv-nontemporal-domain-bit-0" "riscv-nontemporal-domain-bit-1" load (<16 x s8>) from %ir.p) (in function: test_nontemporal_load_v16i8)
warning: Instruction selection used fallback path for test_nontemporal_load_v16i8

Occurrences (48):

Input	Function	Config
nontemporal.ll	test_nontemporal_load_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_store_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_P1_load_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_P1_store_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_PALL_load_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_PALL_store_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_S1_load_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_S1_store_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_ALL_load_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_ALL_store_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_load_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_store_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_P1_load_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_P1_store_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_PALL_load_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_PALL_store_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_S1_load_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_S1_store_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_ALL_load_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_ALL_store_v16i8	`-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_load_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_store_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_P1_load_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_P1_store_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_PALL_load_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_PALL_store_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_S1_load_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_S1_store_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_ALL_load_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_ALL_store_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh`
nontemporal.ll	test_nontemporal_load_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_store_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_P1_load_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_P1_store_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_PALL_load_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_PALL_store_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_S1_load_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_S1_store_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_ALL_load_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+c`
nontemporal.ll	test_nontemporal_ALL_store_v16i8	`-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+c`
smulh.2080eb1551.ll (mutant of smulh.ll)	smulh_v16i8	`-mtriple=riscv32`
smulh.6347252066.ll (mutant of smulh.ll)	smulh_v16i8	`-mtriple=riscv64`
smulh.a945e634a7.ll (mutant of smulh.ll)	smulh_v16i8	`-mtriple=riscv64 -mattr=+m`
smulh.fb93c9dc06.ll (mutant of smulh.ll)	smulh_v16i8	`-mtriple=riscv32 -mattr=+m`
umulh.00bb356541.ll (mutant of umulh.ll)	umulh_v16i8	`-mtriple=riscv32`
umulh.0fc454aefe.ll (mutant of umulh.ll)	umulh_v16i8	`-mtriple=riscv64`
umulh.84f7c60ca3.ll (mutant of umulh.ll)	umulh_v16i8	`-mtriple=riscv64 -mattr=+m`
umulh.e328e54510.ll (mutant of umulh.ll)	umulh_v16i8	`-mtriple=riscv32 -mattr=+m`

Generated 2026-10-15 08:05 UTC.