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| author | Richard Biener <rguenther@suse.de> | 2021-05-17 13:56:14 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2021-05-17 15:27:32 +0200 |
| commit | e0a5daf81f2c79a0275eccd7c1a25349990a7a4d (patch) | |
| tree | 93eb4a844627d64ca4589144a94d9ae784b2d516 /gcc | |
| parent | bdd8e3dd60c4f6080df74fe02b6579451fda6a21 (diff) | |
| download | gcc-e0a5daf81f2c79a0275eccd7c1a25349990a7a4d.zip gcc-e0a5daf81f2c79a0275eccd7c1a25349990a7a4d.tar.gz gcc-e0a5daf81f2c79a0275eccd7c1a25349990a7a4d.tar.bz2 | |
middle-end/100582 - fix array_at_struct_end_p for vector indexing
Vector indexing leaves us with ARRAY_REFs of VIEW_CONVERT_EXPRs,
sth which array_at_struct_end_p considers a array-at-struct-end
even when there's an underlying decl visible. The following fixes
the latter.
2021-05-17 Richard Biener <rguenther@suse.de>
PR middle-end/100582
* tree.c (array_at_struct_end_p): Get to the base of the
reference before looking for the underlying decl.
* gcc.target/i386/pr100582.c: New testcase.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr100582.c | 16 | ||||
| -rw-r--r-- | gcc/tree.c | 8 |
2 files changed, 19 insertions, 5 deletions
diff --git a/gcc/testsuite/gcc.target/i386/pr100582.c b/gcc/testsuite/gcc.target/i386/pr100582.c new file mode 100644 index 0000000..9520fe7 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr100582.c @@ -0,0 +1,16 @@ +/* { dg-do compile } */ +/* { dg-options "-O3 -mavx2" } */ + +typedef unsigned char v32qi __attribute__((vector_size(32))); + +v32qi +f2 (v32qi x, v32qi a, v32qi b) +{ + v32qi e; + for (int i = 0; i != 32; i++) + e[i] = x[i] ? a[i] : b[i]; + + return e; +} + +/* { dg-final { scan-assembler-times "pblendvb" 1 } } */ @@ -12550,13 +12550,11 @@ array_at_struct_end_p (tree ref) || ! TYPE_MAX_VALUE (TYPE_DOMAIN (atype))) return true; - if (TREE_CODE (ref) == MEM_REF - && TREE_CODE (TREE_OPERAND (ref, 0)) == ADDR_EXPR) - ref = TREE_OPERAND (TREE_OPERAND (ref, 0), 0); - /* If the reference is based on a declared entity, the size of the array is constrained by its given domain. (Do not trust commons PR/69368). */ - if (DECL_P (ref) + ref = get_base_address (ref); + if (ref + && DECL_P (ref) && !(flag_unconstrained_commons && VAR_P (ref) && DECL_COMMON (ref)) && DECL_SIZE_UNIT (ref) |