| Run: | main-bc8218b282-20261015-074651 |
| Kind: | fallback |
| Category: | legalize: G_INSERT_SUBVECTOR <vscale x 4 x s32>,<8 x s32> |
| Occurrences: | 10 in 2 configs, 2 test files |
| Snippet from: | zero-call-used-regs-v.ll @used_arg_lmul2 via llvm-extract |
| Config: | -verify-machineinstrs -mtriple=riscv64 -mattr=+v |
| Local check: | reproduces at bc8218b282 |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
define <8 x i32> @used_arg_lmul2(<8 x i32> %a, <8 x i32> %b) #0 {
entry:
%sum = add <8 x i32> %a, %b
ret <8 x i32> %sum
}
attributes #0 = { "zero-call-used-regs"="used-arg" }
llc -verify-machineinstrs -mtriple=riscv64 -mattr=+v -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o - llc -verify-machineinstrs -mtriple=riscv64 -mattr=+v -global-isel=0 snippet.ll -o -
remark: <unknown>:0:0: unable to legalize instruction: %6:_(<vscale x 4 x s32>) = G_INSERT_SUBVECTOR %5:_, %4:_(<8 x s32>), 0 (in function: used_arg_lmul2) warning: Instruction selection used fallback path for used_arg_lmul2
| Input | Function | Config |
|---|---|---|
| vmadd-reassociate.ll | vmadd_non_constant | -mtriple=riscv64 -mattr=+m,+v |
| vmadd-reassociate.ll | vmadd_fixed_no_chain | -mtriple=riscv64 -mattr=+m,+v |
| vmadd-reassociate.ll | vmadd_fixed | -mtriple=riscv64 -mattr=+m,+v |
| vmadd-reassociate.ll | vmadd_fixed_long | -mtriple=riscv64 -mattr=+m,+v |
| zero-call-used-regs-v.ll | used_arg_lmul2 | -verify-machineinstrs -mtriple=riscv64 -mattr=+v |
| vmadd-reassociate.37b5a79f30.ll (mutant of vmadd-reassociate.ll) | vmadd_fixed_no_chain | -mtriple=riscv64 -mattr=+m,+v |
| vmadd-reassociate.7265d3bc28.ll (mutant of vmadd-reassociate.ll) | vmadd_fixed | -mtriple=riscv64 -mattr=+m,+v |
| vmadd-reassociate.7c4367ed38.ll (mutant of vmadd-reassociate.ll) | vmadd_fixed | -mtriple=riscv64 -mattr=+m,+v |
| vmadd-reassociate.7c4367ed38.ll (mutant of vmadd-reassociate.ll) | vmadd_fixed_long | -mtriple=riscv64 -mattr=+m,+v |
| zero-call-used-regs-v.311049b538.ll (mutant of zero-call-used-regs-v.ll) | used_arg_lmul2 | -verify-machineinstrs -mtriple=riscv64 -mattr=+v |
Generated 2026-10-15 08:05 UTC.