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how to modify gcc to compile a[b] differently
- From: Gry Gunvor <gry dot gunvor at gmail dot com>
- To: gcc at gcc dot gnu dot org
- Date: Tue, 31 Mar 2015 15:20:54 -0700
- Subject: how to modify gcc to compile a[b] differently
- Authentication-results: sourceware.org; auth=none
I want to modify gcc 4.9.2 so that array subscripting expressions a[b]
generate a new instruction/syscall foo(a, b) (that is, taking a and b
as arguments) rather than just being turned into *(a+b).
Further, I want accesses into multi-dimensional arrays a[b][c] to turn
into foo(a, (b * row_size + c)) rather than *(a + b * row_size + c).
Any help finding a simple and robust way to do this would be greatly