search for: vali8

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2011 Sep 06
4
[LLVMdev] Unexpected behavior reading/writing <8 x i1> vector to memory
...e back!). This happens both with TOT and 2.9. This program illustrates the issue: define i32 @foo() { %c = alloca <8 x i1> store <8 x i1> <i1 true, i1 false, i1 false, i1 false, i1 false, i1 false, i1 false, i1 false>, <8 x i1>* %c %val = load <8 x i1>* %c %vali8 = bitcast <8 x i1> %val to i8 %vali32 = zext i8 %vali8 to i32 ret i32 %vali32 } If I run this through opt -mem2reg before compiling with llc, then I basically get: _foo: movl $1, %eax ret which looks good to me (and is the result I expect). If I just run it through llc without mem2r...
2011 Sep 06
0
[LLVMdev] Unexpected behavior reading/writing <8 x i1> vector to memory
...oth with TOT and 2.9.  This program illustrates the issue: > > define i32 @foo() { >  %c = alloca <8 x i1> >  store <8 x i1> <i1 true, i1 false, i1 false, i1 false, i1 false, i1 false, i1 false, i1 false>,  <8 x i1>* %c >  %val = load <8 x i1>* %c >  %vali8 = bitcast <8 x i1> %val to i8 >  %vali32 = zext i8 %vali8 to i32 >  ret i32 %vali32 > } > > If I run this through opt -mem2reg before compiling with llc, then I basically get: > > _foo: >        movl    $1, %eax >        ret > > which looks good to me (and is...