Hi, Commit r14-2267-gb8806f6ffbe72e adjusts the arguments order of LEN_STORE from {len,vector,bias} to {len,bias,vector}, in order to make them consistent with LEN_MASK_STORE and MASK_STORE. But it missed to update the related handlings in tree-ssa-sccvn.cc, it caused the failure shown in PR 110744. This patch is to fix the related handlings with the correct index.
Bootstrapped and regress-tested on x86_64-redhat-linux, powerpc64-linux-gnu P8/P9 and powerpc64le-linux-gnu P9/P10. Is it ok for trunk? BR, Kewen ----- PR tree-optimization/110744 gcc/ChangeLog: * tree-ssa-sccvn.cc (vn_reference_lookup_3): Correct the index of bias operand for ifn IFN_LEN_STORE. --- gcc/tree-ssa-sccvn.cc | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/gcc/tree-ssa-sccvn.cc b/gcc/tree-ssa-sccvn.cc index 11061a374a2..c0b3ec420c5 100644 --- a/gcc/tree-ssa-sccvn.cc +++ b/gcc/tree-ssa-sccvn.cc @@ -3299,11 +3299,14 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *data_, return (void *)-1; break; case IFN_LEN_STORE: - len = gimple_call_arg (call, 2); - bias = gimple_call_arg (call, 4); - if (!tree_fits_uhwi_p (len) || !tree_fits_shwi_p (bias)) - return (void *)-1; - break; + { + int len_index = internal_fn_len_index (fn); + len = gimple_call_arg (call, len_index); + bias = gimple_call_arg (call, len_index + 1); + if (!tree_fits_uhwi_p (len) || !tree_fits_shwi_p (bias)) + return (void *) -1; + break; + } default: return (void *)-1; } -- 2.39.3