fallback: legalize: G_SREM <4 x s64>
| Run: | main-bc8218b282-20261015-074651 |
| Kind: | fallback |
| Category: | legalize: G_SREM <4 x s64> |
| Occurrences: | 4 in 4 configs, 1 test files |
| Snippet from: | srem-vector-lkk.ll @dont_fold_srem_i64 via llvm-extract |
| Config: | -mtriple=riscv32 -mattr=+m -verify-machineinstrs |
| Local check: | reproduces at bc8218b282 |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
Snippet:
; Function Attrs: nounwind
define <4 x i64> @dont_fold_srem_i64(<4 x i64> %x) #0 {
%1 = srem <4 x i64> %x, <i64 1, i64 654, i64 23, i64 5423>
ret <4 x i64> %1
}
attributes #0 = { nounwind }
Reproduce:
llc -mtriple=riscv32 -mattr=+m -verify-machineinstrs -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv32 -mattr=+m -verify-machineinstrs -global-isel=0 snippet.ll -o -
Local llc output:
remark: <unknown>:0:0: unable to legalize instruction: %8:_(<4 x s64>) = G_SREM %0:_, %3:_ (in function: dont_fold_srem_i64)
warning: Instruction selection used fallback path for dont_fold_srem_i64
Occurrences (4):
Generated 2026-10-15 08:05 UTC.