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The same hard register may be used for both stack and non-stack accesses. Update ix86_find_max_used_stack_alignment to adjust stack alignment only when a hard register used for a stack access is defined in a basic block that dominates the block where it is used. gcc/ PR target/124098 * config/i386/i386.cc (ix86_access_stack_p): New. (ix86_find_max_used_stack_alignment): Update stack alignment only if stack is used. gcc/testsuite/ PR target/124098 * gcc.target/i386/pr124098.c: New test. Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
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