fallback: legalize: G_SREM <2 x s64>
| Run: | main-04ca53e65f-20261014-113325 |
| Kind: | fallback |
| Category: | legalize: G_SREM <2 x s64> NEW |
| Occurrences: | 2 in 2 configs, 1 test files |
| Snippet from: | bfloat-imm.1a058564b4.ll (mutant of bfloat-imm.ll) @bfloat_zero via llvm-extract |
| Config: | -mtriple=riscv32 -mattr=+zfbfmin -verify-machineinstrs -target-abi ilp32f |
| Local check: | reproduces at 04ca53e65f |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
Snippet:
@G = external global <2 x i64>
; Function Attrs: nounwind
define bfloat @bfloat_zero() #0 {
%LGV = load <2 x i64>, ptr @G, align 16
%B = srem <2 x i64> %LGV, splat (i64 9223372036854775807)
store <2 x i64> %B, ptr poison, align 16
ret bfloat 0.000000e+00
}
attributes #0 = { nounwind }
Reproduce:
llc -mtriple=riscv32 -mattr=+zfbfmin -verify-machineinstrs -target-abi ilp32f -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv32 -mattr=+zfbfmin -verify-machineinstrs -target-abi ilp32f -global-isel=0 snippet.ll -o -
Local llc output:
remark: <unknown>:0:0: unable to legalize instruction: %4:_(<2 x s64>) = G_SREM %0:_, %2:_ (in function: bfloat_zero)
warning: Instruction selection used fallback path for bfloat_zero
Occurrences (2):
| Input | Function | Config |
|---|
| bfloat-imm.1a058564b4.ll (mutant of bfloat-imm.ll) | bfloat_zero | -mtriple=riscv32 -mattr=+zfbfmin -verify-machineinstrs -target-abi ilp32f |
| bfloat-imm.9dce125dda.ll (mutant of bfloat-imm.ll) | bfloat_zero | -mtriple=riscv64 -mattr=+zfbfmin -verify-machineinstrs -target-abi lp64f |
Generated 2026-10-15 08:05 UTC.