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ff0f3f1cb5
Improve aarch64_legitimize_address - avoid splitting the offset if it is
supported. When we do split, take the mode size into account. BLKmode
falls into the unaligned case but should be treated like LDP/STP.
This improves codesize slightly due to fewer base address calculations:
int f(int *p) { return p[5000] + p[7000]; }
Now generates:
f:
add x0, x0, 16384
ldr w1, [x0, 3616]
ldr w0, [x0, 11616]
add w0, w1, w0
ret
instead of:
f:
add x1, x0, 16384
add x0, x0, 24576
ldr w1, [x1, 3616]
ldr w0, [x0, 3424]
add w0, w1, w0
ret
gcc/
* config/aarch64/aarch64.c (aarch64_legitimize_address):
Avoid use of base_offset if offset already in range.
From-SVN: r240026
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