fallback: legalize: G_UDIV <2 x s32>

Run:explore-bc8218b282-20261015-075519
Kind:fallback
Category:legalize: G_UDIV <2 x s32>
Occurrences:1 in 1 configs, 1 test files
Snippet from:rvp-simd-64.ll @test_pudiv_w via llvm-extract
Config:-mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs
Local check:reproduces at bc8218b282
Compiler Explorer:not uploaded (over --godbolt-limit or disabled)

Snippet:

define <2 x i32> @test_pudiv_w(<2 x i32> %a, <2 x i32> %b) {
  %res = udiv <2 x i32> %a, %b
  ret <2 x i32> %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:_(<2 x s32>) = G_UDIV %0:_, %1:_ (in function: test_pudiv_w)
warning: Instruction selection used fallback path for test_pudiv_w

Occurrences (1):

InputFunctionConfig
rvp-simd-64.lltest_pudiv_w-mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs

Generated 2026-10-15 08:05 UTC.