Verify memory usage: Re-use t1/w1 buffer #866
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This commit is the first of a series of commits reducing the stack usage of verification. It is hoisted out from #751 This commit places the t1 and w1 buffers into a union saving K KiB of memory. Operations using it are slightly reordered such that their lifetime does not overlap. As CBMC struggles with unions (issue 8813), we use the same workaround present in signing: Use a struct by default, and a union when MLD_CONFIG_REDUCE_RAM is set. Signed-off-by: Matthias J. Kannwischer <[email protected]>
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This commit is the first of a series of commits reducing the stack usage of verification.
It is hoisted out from #751
This commit places the t1 and w1 buffers into a union saving K KiB of memory. Operations using it are slightly reordered such that their lifetime does not overlap.
As CBMC struggles with unions (issue 8813), we use the same workaround present in signing: Use a struct by default, and a union when MLD_CONFIG_REDUCE_RAM is set.