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| author | Aldy Hernandez <aldyh@redhat.com> | 2021-10-03 19:42:10 +0200 |
|---|---|---|
| committer | Aldy Hernandez <aldyh@redhat.com> | 2021-10-04 13:20:25 +0200 |
| commit | fa3ccf8bfe9940b439d6cc2c38ee8da134b0ff2d (patch) | |
| tree | 64209be6dbd9c65047a4786e9a938558d30e3528 | |
| parent | ad4a3c047f67d628b607bb6cf4791005affd1d83 (diff) | |
| download | gcc-fa3ccf8bfe9940b439d6cc2c38ee8da134b0ff2d.zip gcc-fa3ccf8bfe9940b439d6cc2c38ee8da134b0ff2d.tar.gz gcc-fa3ccf8bfe9940b439d6cc2c38ee8da134b0ff2d.tar.bz2 | |
Remove static marker for range in alloca pass.
The m_ranges[] field in int_range<N> are trees, so they live in GC
space. Since invalid_range is static, it must be marked with GTY
magic. However, calculating invalid_range is not particularly slow,
or on a critical path, so we can just put it in local scope and
recalculate every time.
Tested on x86-64 Linux.
gcc/ChangeLog:
PR tree-optimization/102560
* gimple-ssa-warn-alloca.c (alloca_call_type): Remove static
marker for invalid_range.
gcc/testsuite/ChangeLog:
* g++.dg/Walloca2.C: New test.
| -rw-r--r-- | gcc/gimple-ssa-warn-alloca.c | 7 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/Walloca2.C | 6 |
2 files changed, 9 insertions, 4 deletions
diff --git a/gcc/gimple-ssa-warn-alloca.c b/gcc/gimple-ssa-warn-alloca.c index 4fc7125..d59cea8 100644 --- a/gcc/gimple-ssa-warn-alloca.c +++ b/gcc/gimple-ssa-warn-alloca.c @@ -221,10 +221,9 @@ alloca_call_type (gimple *stmt, bool is_vla) && !r.varying_p ()) { // The invalid bits are anything outside of [0, MAX_SIZE]. - static int_range<2> invalid_range (build_int_cst (size_type_node, 0), - build_int_cst (size_type_node, - max_size), - VR_ANTI_RANGE); + int_range<2> invalid_range (build_int_cst (size_type_node, 0), + build_int_cst (size_type_node, max_size), + VR_ANTI_RANGE); r.intersect (invalid_range); if (r.undefined_p ()) diff --git a/gcc/testsuite/g++.dg/Walloca2.C b/gcc/testsuite/g++.dg/Walloca2.C new file mode 100644 index 0000000..b6992d0 --- /dev/null +++ b/gcc/testsuite/g++.dg/Walloca2.C @@ -0,0 +1,6 @@ +// { dg-do compile } +// { dg-options "-Walloca-larger-than=4207115063 -Wvla-larger-than=1233877270 -O2 --param ggc-min-heapsize=0 --param ggc-min-expand=0 -w" } +// { dg-require-effective-target alloca } + +int a; +char *b = static_cast<char *>(__builtin_alloca (a)); |