fallback: legalize: G_XOR <8 x s8>
| Run: | explore-04ca53e65f-20261014-114124 |
| Kind: | fallback |
| Category: | legalize: G_XOR <8 x s8> |
| Occurrences: | 8 in 5 configs, 2 test files |
| Snippet from: | rvp-simd-64.ll @test_xor_b via llvm-extract |
| Config: | -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
| Local check: | reproduces at 04ca53e65f |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
Snippet:
define <8 x i8> @test_xor_b(<8 x i8> %a, <8 x i8> %b) {
%res = xor <8 x i8> %a, %b
ret <8 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: %2:_(<8 x s8>) = G_XOR %0:_, %1:_ (in function: test_xor_b)
warning: Instruction selection used fallback path for test_xor_b
Occurrences (8):
| Input | Function | Config |
|---|
| rvp-simd-64.ll | test_xor_b | -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
| rvp-simd-64.ll | test_xnor_b | -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
| rvp-simd-64.ll | test_not_b | -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
| rvp-simd-64.ll | test_pabs_b | -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
| stack-realignment.48dd1282b9.ll (mutant of stack-realignment.ll) | caller_no_realign128 | -mtriple=riscv32 -target-abi ilp32e -verify-machineinstrs |
| stack-realignment.8ed4b6ee44.ll (mutant of stack-realignment.ll) | caller_no_realign128 | -mtriple=riscv64 -target-abi lp64e -verify-machineinstrs |
| stack-realignment.b103ac64cb.ll (mutant of stack-realignment.ll) | caller_no_realign128 | -mtriple=riscv64 -verify-machineinstrs |
| stack-realignment.d20767c49c.ll (mutant of stack-realignment.ll) | caller_no_realign128 | -mtriple=riscv32 -verify-machineinstrs |
Generated 2026-10-15 08:05 UTC.