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author | Chris Lattner <sabre@nondot.org> | 2005-12-23 06:24:04 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2005-12-23 06:24:04 +0000 |
commit | c4769bb5290de162a62a1ed461131c5187c13356 (patch) | |
tree | c950beca77756be70f3c13ee98d207b8eed69f1e /lib/Target/Sparc/SparcTargetMachine.cpp | |
parent | e6ee868a8d877b5b4be367d575b03388ee231e91 (diff) |
implement vastart. The dag isel compiles this:
void test3(va_list Y);
void test2(int F, ...) {
va_list X;
va_start(X, F);
test3(X);
}
into this:
test2:
save -104, %o6, %o6
st %i5, [%i6+88]
st %i4, [%i6+84]
st %i3, [%i6+80]
st %i2, [%i6+76]
st %i1, [%i6+72]
add %i6, 72, %o0
st %o0, [%i6+-4]
call test3
nop
restore %g0, %g0, %g0
retl
nop
The simple isel emits:
test2:
save -96, %o6, %o6
st %i0, [%i6+68]
st %i1, [%i6+72]
st %i2, [%i6+76]
st %i3, [%i6+80]
st %i4, [%i6+84]
st %i5, [%i6+88]
or %g0, 1, %l0
or %g0, 4, %l1
umul %l0, %l1, %l0
add %l0, 7, %l0
and %l0, -8, %l0
sub %o6, %l0, %o6
add %o6, 96, %l0
add %i6, 72, %l1
st %l1, [%l0]
ld [%l0], %o0
call test3
nop
restore %g0, %g0, %g0
retl
nop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24985 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/Sparc/SparcTargetMachine.cpp')
0 files changed, 0 insertions, 0 deletions