fallback: legalize: G_ADD <8 x s16>

Run:main-04ca53e65f-20261014-105623
Kind:fallback
Category:legalize: G_ADD <8 x s16>
Occurrences:1 in 1 configs, 1 test files
Snippet from:calling-conv-p-ext-vector.ll @test_cc_v8i16 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 <8 x i16> @test_cc_v8i16(<8 x i16> %a, <8 x i16> %b) {
  %res = add <8 x i16> %a, %b
  ret <8 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: %6:_(<8 x s16>) = G_ADD %0:_, %1:_ (in function: test_cc_v8i16)
warning: Instruction selection used fallback path for test_cc_v8i16

Occurrences (1):

InputFunctionConfig
calling-conv-p-ext-vector.lltest_cc_v8i16-mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs

Generated 2026-10-15 08:05 UTC.