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| author | Richard Sandiford <richard.sandiford@arm.com> | 2021-03-31 19:34:01 +0100 |
|---|---|---|
| committer | Richard Sandiford <richard.sandiford@arm.com> | 2021-03-31 19:34:01 +0100 |
| commit | c778968339afd140380a46edbade054667c7dce2 (patch) | |
| tree | e6d75a82dea4daa295a0fb3d5821df7bb876c42d /gcc/gimple-fold.c | |
| parent | b5c7accfb56a7347008f629be4c7344dd849b1b1 (diff) | |
| download | gcc-c778968339afd140380a46edbade054667c7dce2.zip gcc-c778968339afd140380a46edbade054667c7dce2.tar.gz gcc-c778968339afd140380a46edbade054667c7dce2.tar.bz2 | |
gimple-fold: Recompute ADDR_EXPR flags after folding a TMR [PR98268]
The gimple verifier picked up that an ADDR_EXPR of a MEM_REF was not
marked TREE_CONSTANT even though the address was in fact invariant.
This came from folding a &TARGET_MEM_REF with constant operands to
a &MEM_REF; &TARGET_MEM_REF is never treated as TREE_CONSTANT
but &MEM_REF can be.
gcc/
PR tree-optimization/98268
* gimple-fold.c (maybe_canonicalize_mem_ref_addr): Call
recompute_tree_invariant_for_addr_expr after successfully
folding a TARGET_MEM_REF that occurs inside an ADDR_EXPR.
gcc/testsuite/
PR tree-optimization/98268
* gcc.target/aarch64/sve/pr98268-1.c: New test.
* gcc.target/aarch64/sve/pr98268-2.c: Likewise.
Diffstat (limited to 'gcc/gimple-fold.c')
| -rw-r--r-- | gcc/gimple-fold.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/gimple-fold.c b/gcc/gimple-fold.c index de5a6c2..9e6683d 100644 --- a/gcc/gimple-fold.c +++ b/gcc/gimple-fold.c @@ -5877,6 +5877,8 @@ maybe_canonicalize_mem_ref_addr (tree *t, bool is_debug = false) if (tem) { *t = tem; + if (TREE_CODE (*orig_t) == ADDR_EXPR) + recompute_tree_invariant_for_addr_expr (*orig_t); res = true; } } |