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Don't attempt to do CSE across labels (465276, r=danderson).

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This commit is contained in:
Andreas Gal 2008-11-17 00:05:29 -08:00
parent c19528a655
commit cdbe1015e3
3 changed files with 23 additions and 0 deletions
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7
js/src/nanojit/LIR.cpp
View File

@ -1910,6 +1910,13 @@ namespace nanojit
return exprs.add(out->insImmq(q), k);
}
LIns* CseFilter::ins0(LOpcode v)
{
if (v == LIR_label)
exprs.clear();
return out->ins0(v);
}
LIns* CseFilter::ins1(LOpcode v, LInsp a)
{
if (isCse(v)) {

7
js/src/nanojit/LIR.h
View File

@ -654,6 +654,12 @@ namespace nanojit
LIns* insAlloc(int32_t size) {
return add(out->insAlloc(size));
}
LIns* insImm(int32_t imm) {
return add(out->insImm(imm));
}
LIns* insImmq(uint64_t imm) {
return add(out->insImmq(imm));
}
};
#endif
@ -712,6 +718,7 @@ namespace nanojit
CseFilter(LirWriter *out, avmplus::GC *gc);
LIns* insImm(int32_t imm);
LIns* insImmq(uint64_t q);
LIns* ins0(LOpcode v);
LIns* ins1(LOpcode v, LInsp);
LIns* ins2(LOpcode v, LInsp, LInsp);
LIns* insLoad(LOpcode v, LInsp b, LInsp d);

9
js/src/trace-test.js
View File

@ -2476,6 +2476,15 @@ function testIn() {
testIn.expected = "true,true,true,true,true,false,false,false,false,false,true,true,true,true,true,false,false,false,false,false,true,true,true,true,true,false,false,false,false,false,true,true,true,true,true,false,false,false,false,false,true,true,true,true,true,false,false,false,false,false";
test(testIn);
function testBranchCse() {
empty = [];
out = [];
for (var j=0;j<10;++j) { empty[42]; out.push((1 * (1)) | ""); }
return out.join(",");
}
testBranchCse.expected = "1,1,1,1,1,1,1,1,1,1";
test(testBranchCse);
/* NOTE: Keep this test last, since it screws up all for...in loops after it. */
function testGlobalProtoAccess() {
return "ok";