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<font face="Segoe UI, Segoe UI Web Regular, Segoe UI Symbol, Helvetica Neue, Helvetica, Arial, sans-serif" size="2" class=""><span style="line-height: 18.850000381469727px;" class="">Masked load/store are overloaded intrinsics, the only generic type is the
type of the value being loaded/stored. The signature of the intrinsic is generated based on this type. The type of the pointer argument is generated as a pointer to the return type with default addrspace. E.g.:</span></font></p>
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<font face="Segoe UI, Segoe UI Web Regular, Segoe UI Symbol, Helvetica Neue, Helvetica, Arial, sans-serif" size="2" class=""><span style="line-height: 18.850000381469727px;" class="">declare <8 x i32> @llvm.masked.load.v8i32(<8 x i32>*, i32, <8 x i1>, <8 x
i32>)</span></font></p>
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<font face="Segoe UI, Segoe UI Web Regular, Segoe UI Symbol, Helvetica Neue, Helvetica, Arial, sans-serif" size="2" class=""><span style="line-height: 18.850000381469727px;" class="">The problem occurs when loop-vectorize tries to use @llvm.masked.load/store
intrinsic for a non-default addrspace pointer. It fails with "Calling a function with a bad signature!" assertion in CallInst constructor because it tries to pass a non-default addrspace pointer to the pointer argument which has default addrspace.</span></font></p>
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<font face="Segoe UI, Segoe UI Web Regular, Segoe UI Symbol, Helvetica Neue, Helvetica, Arial, sans-serif" size="2" class=""><span style="line-height: 18.850000381469727px;" class="">My proposal to fix the problem is to add another overloaded type parameter
for the intrinsics - the pointer type, which can be any pointer with underlying type being a data type. In this case the signature of the intrinsic above would be:</span></font></p>
<p style="margin: 0px 0px 12px; padding: 0px; border: 0px; widows: 1; background-color: rgb(255, 255, 255);" class="">
<font face="Segoe UI, Segoe UI Web Regular, Segoe UI Symbol, Helvetica Neue, Helvetica, Arial, sans-serif" size="2" class=""><span style="line-height: 18.850000381469727px;" class="">declare <8 x i32> @llvm.masked.load.v8i32.p1v8i32(<8 x i32> addrspace(1)*,
i32, <8 x i1>, <8 x i32>)</span></font></p>
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<font face="Segoe UI, Segoe UI Web Regular, Segoe UI Symbol, Helvetica Neue, Helvetica, Arial, sans-serif" size="2" class=""><span style="line-height: 18.850000381469727px;" class="">Corresponding patch is posted on phabricator:
<a href="http://reviews.llvm.org/D17270" class="">http://reviews.llvm.org/D17270</a></span></font></p>
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<font face="Segoe UI, Segoe UI Web Regular, Segoe UI Symbol, Helvetica Neue, Helvetica, Arial, sans-serif" size="2" class=""><span style="line-height: 18.850000381469727px;" class="">Any comments, objections or alternatives?</span></font></p>
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<font face="Segoe UI, Segoe UI Web Regular, Segoe UI Symbol, Helvetica Neue, Helvetica, Arial, sans-serif" size="2" class=""><span style="line-height: 18.850000381469727px;" class="">Artur</span></font></p>
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