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-rw-r--r--gcc/explow.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/gcc/explow.c b/gcc/explow.c
index 0fbc6d2..65f904a 100644
--- a/gcc/explow.c
+++ b/gcc/explow.c
@@ -27,9 +27,9 @@ along with GCC; see the file COPYING3. If not see
#include "tree.h"
#include "memmodel.h"
#include "tm_p.h"
+#include "optabs.h"
#include "expmed.h"
#include "profile-count.h"
-#include "optabs.h"
#include "emit-rtl.h"
#include "recog.h"
#include "diagnostic-core.h"
@@ -1583,10 +1583,14 @@ allocate_dynamic_stack_space (rtx size, unsigned size_align,
OFFSET is the offset of the area into the virtual stack vars area.
REQUIRED_ALIGN is the alignment (in bits) required for the region
- of memory. */
+ of memory.
+
+ BASE is the rtx of the base of this virtual stack vars area.
+ The only time this is not `virtual_stack_vars_rtx` is when tagging pointers
+ on the stack. */
rtx
-get_dynamic_stack_base (poly_int64 offset, unsigned required_align)
+get_dynamic_stack_base (poly_int64 offset, unsigned required_align, rtx base)
{
rtx target;
@@ -1594,7 +1598,7 @@ get_dynamic_stack_base (poly_int64 offset, unsigned required_align)
crtl->preferred_stack_boundary = PREFERRED_STACK_BOUNDARY;
target = gen_reg_rtx (Pmode);
- emit_move_insn (target, virtual_stack_vars_rtx);
+ emit_move_insn (target, base);
target = expand_binop (Pmode, add_optab, target,
gen_int_mode (offset, Pmode),
NULL_RTX, 1, OPTAB_LIB_WIDEN);