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| author | Tom Tromey <tromey@redhat.com> | 2013-12-27 22:22:07 -0700 |
|---|---|---|
| committer | Tom Tromey <tromey@redhat.com> | 2014-01-16 14:56:31 -0700 |
| commit | 98b1cfdcc8998ad3e35896ade0fdba04ceda8d74 (patch) | |
| tree | fc5cfeffc277830ab26c482ce56ddae9d5e6f271 /gdb/value.c | |
| parent | 77a194459598886be9a0bf3e3bac0a11025ef208 (diff) | |
| download | fsf-binutils-gdb-98b1cfdcc8998ad3e35896ade0fdba04ceda8d74.zip fsf-binutils-gdb-98b1cfdcc8998ad3e35896ade0fdba04ceda8d74.tar.gz fsf-binutils-gdb-98b1cfdcc8998ad3e35896ade0fdba04ceda8d74.tar.bz2 | |
rearrange struct value to save memory
This patch rearranges struct value a tiny bit, moving the "regnum"
field into a hole. This saves 8 bytes per value on a 64-bit machine,
and 4 bytes per value on a 32 bit machine. I think it does not
negatively affect readability or performance.
Built and regtested on x86-64 Fedora 18.
2014-01-16 Tom Tromey <tromey@redhat.com>
* value.c (struct value) <regnum>: Move earlier.
Diffstat (limited to 'gdb/value.c')
| -rw-r--r-- | gdb/value.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gdb/value.c b/gdb/value.c index 8542316..0e13b76 100644 --- a/gdb/value.c +++ b/gdb/value.c @@ -216,6 +216,9 @@ struct value /* If the value has been released. */ unsigned int released : 1; + /* Register number if the value is from a register. */ + short regnum; + /* Location of value (if lval). */ union { @@ -324,9 +327,6 @@ struct value taken off this list. */ struct value *next; - /* Register number if the value is from a register. */ - short regnum; - /* Actual contents of the value. Target byte-order. NULL or not valid if lazy is nonzero. */ gdb_byte *contents; |