fallback: legalize: G_SELECT <16 x s8>,<16 x s1>
| Run: | main-04ca53e65f-20261014-105623 |
| Kind: | fallback |
| Category: | legalize: G_SELECT <16 x s8>,<16 x s1> |
| Occurrences: | 2 in 1 configs, 1 test files |
| Snippet from: | combine-storetomstore.ll @test_masked_store_success_v16i8 via llvm-extract |
| Config: | -mtriple=riscv64-- -mattr=+m,+v,+f |
| Local check: | reproduces at 04ca53e65f |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
Snippet:
define void @test_masked_store_success_v16i8(<16 x i8> %x, ptr %ptr, <16 x i1> %mask) {
%load = load <16 x i8>, ptr %ptr, align 32
%sel = select <16 x i1> %mask, <16 x i8> %x, <16 x i8> %load
store <16 x i8> %sel, ptr %ptr, align 32
ret void
}
Reproduce:
llc -mtriple=riscv64-- -mattr=+m,+v,+f -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv64-- -mattr=+m,+v,+f -global-isel=0 snippet.ll -o -
Local llc output:
remark: <unknown>:0:0: unable to legalize instruction: %6:_(<16 x s8>) = G_SELECT %2:_(<16 x s1>), %0:_, %5:_ (in function: test_masked_store_success_v16i8)
warning: Instruction selection used fallback path for test_masked_store_success_v16i8
Occurrences (2):
| Input | Function | Config |
|---|
| combine-storetomstore.ll | test_masked_store_success_v16i8 | -mtriple=riscv64-- -mattr=+m,+v,+f |
| combine-storetomstore.59bbcde4c6.ll (mutant of combine-storetomstore.ll) | test_masked_store_success_v16i8 | -mtriple=riscv64-- -mattr=+m,+v,+f |
Generated 2026-10-15 08:05 UTC.