search for: promoteintop_brcond

...ng when the Type-legalized selection DAG > was optimized and the *xor *node was changed to a *setcc *(and > actually, the *xor*seems like it was more optimal than the *setcc > *anyway)*. * > > Any ideas about why this is happening? I would suggest starting with DAGTypeLegalizer::PromoteIntOp_BRCOND, I think... -Eli -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-...

ComputeNumSignBits() is never called. Moreover, Cell SPU has to custom lower truncates in a specific way to preserve register uniformity (scalar and vector representation is one and the same, or, put another way, the scalar and vector registers are the same register.) Consequently, I can't trap (truncate (setcc ...)) patterns easily because the truncate is being custom lowered.

...the Type-legalized selection DAG was > optimized and the *xor *node was changed to a *setcc *(and actually, the > *xor* seems like it was more optimal than the *setcc *anyway)*. * > > Any ideas about why this is happening? > > > I would suggest starting with DAGTypeLegalizer::PromoteIntOp_BRCOND, I > think... > > -Eli > > -- > Employee of Qualcomm Innovation Center, Inc. > Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project > > -------------- next part -------------- An HTML attachment was scrubbed... URL: &...

Here's our testcase: #include <stdio.h> struct flags { unsigned frog: 1; unsigned foo : 1; unsigned bar : 1; unsigned bat : 1; unsigned baz : 1; unsigned bam : 1; }; int main() { struct flags flags; flags.bar = 1; flags.foo = 1; if (flags.foo == 1) { printf("Pass\n"); return 0; } else {