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mfocrf + test

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This commit is contained in:
Ben Vanik
2015-02-01 11:22:56 -08:00
parent cfcd6118c2
commit f60677f359
7 changed files with 113 additions and 7 deletions
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22
src/alloy/frontend/ppc/ppc_hir_builder.cc
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@@ -253,8 +253,26 @@ void PPCHIRBuilder::StoreCTR(Value* value) {
}
Value* PPCHIRBuilder::LoadCR(uint32_t n) {
assert_always();
return 0;
// Construct the entire word of just the bits we care about.
// This makes it easier for the optimizer to exclude things, though
// we could be even more clever and watch sequences.
Value* v = Shl(ZeroExtend(LoadContext(offsetof(PPCContext, cr0) + (4 * n) + 0,
INT8_TYPE),
INT64_TYPE),
4 * (7 - n) + 3);
v = Or(v, Shl(ZeroExtend(LoadContext(offsetof(PPCContext, cr0) + (4 * n) + 1,
INT8_TYPE),
INT64_TYPE),
4 * (7 - n) + 2));
v = Or(v, Shl(ZeroExtend(LoadContext(offsetof(PPCContext, cr0) + (4 * n) + 2,
INT8_TYPE),
INT64_TYPE),
4 * (7 - n) + 1));
v = Or(v, Shl(ZeroExtend(LoadContext(offsetof(PPCContext, cr0) + (4 * n) + 3,
INT8_TYPE),
INT64_TYPE),
4 * (7 - n) + 0));
return v;
}
Value* PPCHIRBuilder::LoadCRField(uint32_t n, uint32_t bit) {