[InstCombine] Remove unnecessary intrinsics demanded elts handling
As discussed on D28777 - we don't need to handle 'all element' shuffles inside InstCombiner::visitCallInst as InstCombiner::SimplifyDemandedVectorElts will do everything we need.
llvm-svn: 292365
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
index 8d89610..b0a0327 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -2327,40 +2327,20 @@
case Intrinsic::x86_ssse3_pshuf_b_128:
case Intrinsic::x86_avx2_pshuf_b:
- case Intrinsic::x86_avx512_pshuf_b_512: {
+ case Intrinsic::x86_avx512_pshuf_b_512:
if (Value *V = simplifyX86pshufb(*II, *Builder))
return replaceInstUsesWith(*II, V);
-
- unsigned VWidth = II->getType()->getVectorNumElements();
- APInt UndefElts(VWidth, 0);
- APInt DemandedElts = APInt::getAllOnesValue(VWidth);
- if (Value *V = SimplifyDemandedVectorElts(II, DemandedElts, UndefElts)) {
- if (V != II)
- return replaceInstUsesWith(*II, V);
- return II;
- }
break;
- }
case Intrinsic::x86_avx_vpermilvar_ps:
case Intrinsic::x86_avx_vpermilvar_ps_256:
case Intrinsic::x86_avx512_vpermilvar_ps_512:
case Intrinsic::x86_avx_vpermilvar_pd:
case Intrinsic::x86_avx_vpermilvar_pd_256:
- case Intrinsic::x86_avx512_vpermilvar_pd_512: {
+ case Intrinsic::x86_avx512_vpermilvar_pd_512:
if (Value *V = simplifyX86vpermilvar(*II, *Builder))
return replaceInstUsesWith(*II, V);
-
- unsigned VWidth = II->getType()->getVectorNumElements();
- APInt UndefElts(VWidth, 0);
- APInt DemandedElts = APInt::getAllOnesValue(VWidth);
- if (Value *V = SimplifyDemandedVectorElts(II, DemandedElts, UndefElts)) {
- if (V != II)
- return replaceInstUsesWith(*II, V);
- return II;
- }
break;
- }
case Intrinsic::x86_avx2_permd:
case Intrinsic::x86_avx2_permps: