fallback: legalize: G_ADD <16 x s8>
| Run: | main-bc8218b282-20261015-074651 |
| Kind: | fallback |
| Category: | legalize: G_ADD <16 x s8> |
| Occurrences: | 3 in 2 configs, 1 test files |
| Snippet from: | calling-conv-p-ext-vector.ll @test_cc_v16i8 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 <16 x i8> @test_cc_v16i8(<16 x i8> %a, <16 x i8> %b) {
%res = add <16 x i8> %a, %b
ret <16 x i8> %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:_(<16 x s8>) = G_ADD %0:_, %1:_ (in function: test_cc_v16i8)
warning: Instruction selection used fallback path for test_cc_v16i8
Occurrences (3):
| Input | Function | Config |
|---|
| calling-conv-p-ext-vector.ll | test_cc_v16i8 | -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
| calling-conv-p-ext-vector.7e19787614.ll (mutant of calling-conv-p-ext-vector.ll) | test_cc_v16i8 | -mtriple=riscv32 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
| calling-conv-p-ext-vector.9901ec5358.ll (mutant of calling-conv-p-ext-vector.ll) | test_cc_v16i8 | -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
Generated 2026-10-15 08:05 UTC.