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authorChris Lattner <sabre@nondot.org>2005-12-23 06:24:04 +0000
committerChris Lattner <sabre@nondot.org>2005-12-23 06:24:04 +0000
commitc4769bb5290de162a62a1ed461131c5187c13356 (patch)
treec950beca77756be70f3c13ee98d207b8eed69f1e /lib/Target/Sparc/SparcTargetMachine.cpp
parente6ee868a8d877b5b4be367d575b03388ee231e91 (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