[CostModel][X86] Added ctlz/cttz undef-zero costmodel tests

llvm-svn: 268761

1 files changed, 209 insertions, 32 deletions

diff --git a/llvm/test/Analysis/CostModel/X86/ctbits-cost.ll b/llvm/test/Analysis/CostModel/X86/ctbits-cost.ll
index 5d596513f92..c8dae85d98d 100644
--- a/llvm/test/Analysis/CostModel/X86/ctbits-cost.ll
+++ b/llvm/test/Analysis/CostModel/X86/ctbits-cost.ll
@@ -67,6 +67,7 @@ define <8 x i16> @var_ctpop_v8i16(<8 x i16> %a) {
 ; SSE42: Found an estimated cost of 2 for instruction:   %ctpop
 ; AVX: Found an estimated cost of 2 for instruction:   %ctpop
 ; AVX2: Found an estimated cost of 2 for instruction:   %ctpop
+; XOP: Found an estimated cost of 2 for instruction:   %ctpop
   %ctpop = call <8 x i16> @llvm.ctpop.v8i16(<8 x i16> %a)
   ret <8 x i16> %ctpop
 }
@@ -106,15 +107,15 @@ define <32 x i8> @var_ctpop_v32i8(<32 x i8> %a) {
 
 ; Verify the cost of vector leading zero count instructions.
 
-declare <2 x i64> @llvm.ctlz.v2i64(<2 x i64>)
-declare <4 x i32> @llvm.ctlz.v4i32(<4 x i32>)
-declare <8 x i16> @llvm.ctlz.v8i16(<8 x i16>)
-declare <16 x i8> @llvm.ctlz.v16i8(<16 x i8>)
+declare <2 x i64> @llvm.ctlz.v2i64(<2 x i64>, i1)
+declare <4 x i32> @llvm.ctlz.v4i32(<4 x i32>, i1)
+declare <8 x i16> @llvm.ctlz.v8i16(<8 x i16>, i1)
+declare <16 x i8> @llvm.ctlz.v16i8(<16 x i8>, i1)
 
-declare <4 x i64> @llvm.ctlz.v4i64(<4 x i64>)
-declare <8 x i32> @llvm.ctlz.v8i32(<8 x i32>)
-declare <16 x i16> @llvm.ctlz.v16i16(<16 x i16>)
-declare <32 x i8> @llvm.ctlz.v32i8(<32 x i8>)
+declare <4 x i64> @llvm.ctlz.v4i64(<4 x i64>, i1)
+declare <8 x i32> @llvm.ctlz.v8i32(<8 x i32>, i1)
+declare <16 x i16> @llvm.ctlz.v16i16(<16 x i16>, i1)
+declare <32 x i8> @llvm.ctlz.v32i8(<32 x i8>, i1)
 
 define <2 x i64> @var_ctlz_v2i64(<2 x i64> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v2i64':
@@ -123,7 +124,18 @@ define <2 x i64> @var_ctlz_v2i64(<2 x i64> %a) {
 ; AVX: Found an estimated cost of 6 for instruction:   %ctlz
 ; AVX2: Found an estimated cost of 6 for instruction:   %ctlz
 ; XOP: Found an estimated cost of 6 for instruction:   %ctlz
-  %ctlz = call <2 x i64> @llvm.ctlz.v2i64(<2 x i64> %a)
+  %ctlz = call <2 x i64> @llvm.ctlz.v2i64(<2 x i64> %a, i1 0)
+  ret <2 x i64> %ctlz
+}
+
+define <2 x i64> @var_ctlz_v2i64u(<2 x i64> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v2i64u':
+; SSE2: Found an estimated cost of 6 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 6 for instruction:   %ctlz
+; AVX: Found an estimated cost of 6 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 6 for instruction:   %ctlz
+; XOP: Found an estimated cost of 6 for instruction:   %ctlz
+  %ctlz = call <2 x i64> @llvm.ctlz.v2i64(<2 x i64> %a, i1 1)
   ret <2 x i64> %ctlz
 }
 
@@ -134,7 +146,18 @@ define <4 x i64> @var_ctlz_v4i64(<4 x i64> %a) {
 ; AVX: Found an estimated cost of 12 for instruction:   %ctlz
 ; AVX2: Found an estimated cost of 12 for instruction:   %ctlz
 ; XOP: Found an estimated cost of 12 for instruction:   %ctlz
-  %ctlz = call <4 x i64> @llvm.ctlz.v4i64(<4 x i64> %a)
+  %ctlz = call <4 x i64> @llvm.ctlz.v4i64(<4 x i64> %a, i1 0)
+  ret <4 x i64> %ctlz
+}
+
+define <4 x i64> @var_ctlz_v4i64u(<4 x i64> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v4i64u':
+; SSE2: Found an estimated cost of 12 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 12 for instruction:   %ctlz
+; AVX: Found an estimated cost of 12 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 12 for instruction:   %ctlz
+; XOP: Found an estimated cost of 12 for instruction:   %ctlz
+  %ctlz = call <4 x i64> @llvm.ctlz.v4i64(<4 x i64> %a, i1 1)
   ret <4 x i64> %ctlz
 }
 
@@ -145,7 +168,18 @@ define <4 x i32> @var_ctlz_v4i32(<4 x i32> %a) {
 ; AVX: Found an estimated cost of 12 for instruction:   %ctlz
 ; AVX2: Found an estimated cost of 12 for instruction:   %ctlz
 ; XOP: Found an estimated cost of 12 for instruction:   %ctlz
-  %ctlz = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> %a)
+  %ctlz = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> %a, i1 0)
+  ret <4 x i32> %ctlz
+}
+
+define <4 x i32> @var_ctlz_v4i32u(<4 x i32> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v4i32u':
+; SSE2: Found an estimated cost of 12 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 12 for instruction:   %ctlz
+; AVX: Found an estimated cost of 12 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 12 for instruction:   %ctlz
+; XOP: Found an estimated cost of 12 for instruction:   %ctlz
+  %ctlz = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> %a, i1 1)
   ret <4 x i32> %ctlz
 }
 
@@ -156,7 +190,18 @@ define <8 x i32> @var_ctlz_v8i32(<8 x i32> %a) {
 ; AVX: Found an estimated cost of 24 for instruction:   %ctlz
 ; AVX2: Found an estimated cost of 24 for instruction:   %ctlz
 ; XOP: Found an estimated cost of 24 for instruction:   %ctlz
-  %ctlz = call <8 x i32> @llvm.ctlz.v8i32(<8 x i32> %a)
+  %ctlz = call <8 x i32> @llvm.ctlz.v8i32(<8 x i32> %a, i1 0)
+  ret <8 x i32> %ctlz
+}
+
+define <8 x i32> @var_ctlz_v8i32u(<8 x i32> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v8i32u':
+; SSE2: Found an estimated cost of 24 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 24 for instruction:   %ctlz
+; AVX: Found an estimated cost of 24 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 24 for instruction:   %ctlz
+; XOP: Found an estimated cost of 24 for instruction:   %ctlz
+  %ctlz = call <8 x i32> @llvm.ctlz.v8i32(<8 x i32> %a, i1 1)
   ret <8 x i32> %ctlz
 }
 
@@ -167,7 +212,18 @@ define <8 x i16> @var_ctlz_v8i16(<8 x i16> %a) {
 ; AVX: Found an estimated cost of 24 for instruction:   %ctlz
 ; AVX2: Found an estimated cost of 24 for instruction:   %ctlz
 ; XOP: Found an estimated cost of 24 for instruction:   %ctlz
-  %ctlz = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> %a)
+  %ctlz = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> %a, i1 0)
+  ret <8 x i16> %ctlz
+}
+
+define <8 x i16> @var_ctlz_v8i16u(<8 x i16> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v8i16u':
+; SSE2: Found an estimated cost of 24 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 24 for instruction:   %ctlz
+; AVX: Found an estimated cost of 24 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 24 for instruction:   %ctlz
+; XOP: Found an estimated cost of 24 for instruction:   %ctlz
+  %ctlz = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> %a, i1 1)
   ret <8 x i16> %ctlz
 }
 
@@ -178,7 +234,18 @@ define <16 x i16> @var_ctlz_v16i16(<16 x i16> %a) {
 ; AVX: Found an estimated cost of 48 for instruction:   %ctlz
 ; AVX2: Found an estimated cost of 48 for instruction:   %ctlz
 ; XOP: Found an estimated cost of 48 for instruction:   %ctlz
-  %ctlz = call <16 x i16> @llvm.ctlz.v16i16(<16 x i16> %a)
+  %ctlz = call <16 x i16> @llvm.ctlz.v16i16(<16 x i16> %a, i1 0)
+  ret <16 x i16> %ctlz
+}
+
+define <16 x i16> @var_ctlz_v16i16u(<16 x i16> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v16i16u':
+; SSE2: Found an estimated cost of 48 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 48 for instruction:   %ctlz
+; AVX: Found an estimated cost of 48 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 48 for instruction:   %ctlz
+; XOP: Found an estimated cost of 48 for instruction:   %ctlz
+  %ctlz = call <16 x i16> @llvm.ctlz.v16i16(<16 x i16> %a, i1 1)
   ret <16 x i16> %ctlz
 }
 
@@ -189,7 +256,18 @@ define <16 x i8> @var_ctlz_v16i8(<16 x i8> %a) {
 ; AVX: Found an estimated cost of 48 for instruction:   %ctlz
 ; AVX2: Found an estimated cost of 48 for instruction:   %ctlz
 ; XOP: Found an estimated cost of 48 for instruction:   %ctlz
-  %ctlz = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> %a)
+  %ctlz = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> %a, i1 0)
+  ret <16 x i8> %ctlz
+}
+
+define <16 x i8> @var_ctlz_v16i8u(<16 x i8> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v16i8u':
+; SSE2: Found an estimated cost of 48 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 48 for instruction:   %ctlz
+; AVX: Found an estimated cost of 48 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 48 for instruction:   %ctlz
+; XOP: Found an estimated cost of 48 for instruction:   %ctlz
+  %ctlz = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> %a, i1 1)
   ret <16 x i8> %ctlz
 }
 
@@ -200,21 +278,32 @@ define <32 x i8> @var_ctlz_v32i8(<32 x i8> %a) {
 ; AVX: Found an estimated cost of 96 for instruction:   %ctlz
 ; AVX2: Found an estimated cost of 96 for instruction:   %ctlz
 ; XOP: Found an estimated cost of 96 for instruction:   %ctlz
-  %ctlz = call <32 x i8> @llvm.ctlz.v32i8(<32 x i8> %a)
+  %ctlz = call <32 x i8> @llvm.ctlz.v32i8(<32 x i8> %a, i1 0)
+  ret <32 x i8> %ctlz
+}
+
+define <32 x i8> @var_ctlz_v32i8u(<32 x i8> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v32i8u':
+; SSE2: Found an estimated cost of 96 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 96 for instruction:   %ctlz
+; AVX: Found an estimated cost of 96 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 96 for instruction:   %ctlz
+; XOP: Found an estimated cost of 96 for instruction:   %ctlz
+  %ctlz = call <32 x i8> @llvm.ctlz.v32i8(<32 x i8> %a, i1 1)
   ret <32 x i8> %ctlz
 }
 
 ; Verify the cost of vector trailing zero count instructions.
 
-declare <2 x i64> @llvm.cttz.v2i64(<2 x i64>)
-declare <4 x i32> @llvm.cttz.v4i32(<4 x i32>)
-declare <8 x i16> @llvm.cttz.v8i16(<8 x i16>)
-declare <16 x i8> @llvm.cttz.v16i8(<16 x i8>)
+declare <2 x i64> @llvm.cttz.v2i64(<2 x i64>, i1)
+declare <4 x i32> @llvm.cttz.v4i32(<4 x i32>, i1)
+declare <8 x i16> @llvm.cttz.v8i16(<8 x i16>, i1)
+declare <16 x i8> @llvm.cttz.v16i8(<16 x i8>, i1)
 
-declare <4 x i64> @llvm.cttz.v4i64(<4 x i64>)
-declare <8 x i32> @llvm.cttz.v8i32(<8 x i32>)
-declare <16 x i16> @llvm.cttz.v16i16(<16 x i16>)
-declare <32 x i8> @llvm.cttz.v32i8(<32 x i8>)
+declare <4 x i64> @llvm.cttz.v4i64(<4 x i64>, i1)
+declare <8 x i32> @llvm.cttz.v8i32(<8 x i32>, i1)
+declare <16 x i16> @llvm.cttz.v16i16(<16 x i16>, i1)
+declare <32 x i8> @llvm.cttz.v32i8(<32 x i8>, i1)
 
 define <2 x i64> @var_cttz_v2i64(<2 x i64> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v2i64':
@@ -223,7 +312,18 @@ define <2 x i64> @var_cttz_v2i64(<2 x i64> %a) {
 ; AVX: Found an estimated cost of 6 for instruction:   %cttz
 ; AVX2: Found an estimated cost of 6 for instruction:   %cttz
 ; XOP: Found an estimated cost of 6 for instruction:   %cttz
-  %cttz = call <2 x i64> @llvm.cttz.v2i64(<2 x i64> %a)
+  %cttz = call <2 x i64> @llvm.cttz.v2i64(<2 x i64> %a, i1 0)
+  ret <2 x i64> %cttz
+}
+
+define <2 x i64> @var_cttz_v2i64u(<2 x i64> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_cttz_v2i64u':
+; SSE2: Found an estimated cost of 6 for instruction:   %cttz
+; SSE42: Found an estimated cost of 6 for instruction:   %cttz
+; AVX: Found an estimated cost of 6 for instruction:   %cttz
+; AVX2: Found an estimated cost of 6 for instruction:   %cttz
+; XOP: Found an estimated cost of 6 for instruction:   %cttz
+  %cttz = call <2 x i64> @llvm.cttz.v2i64(<2 x i64> %a, i1 1)
   ret <2 x i64> %cttz
 }
 
@@ -234,7 +334,18 @@ define <4 x i64> @var_cttz_v4i64(<4 x i64> %a) {
 ; AVX: Found an estimated cost of 12 for instruction:   %cttz
 ; AVX2: Found an estimated cost of 12 for instruction:   %cttz
 ; XOP: Found an estimated cost of 12 for instruction:   %cttz
-  %cttz = call <4 x i64> @llvm.cttz.v4i64(<4 x i64> %a)
+  %cttz = call <4 x i64> @llvm.cttz.v4i64(<4 x i64> %a, i1 0)
+  ret <4 x i64> %cttz
+}
+
+define <4 x i64> @var_cttz_v4i64u(<4 x i64> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_cttz_v4i64u':
+; SSE2: Found an estimated cost of 12 for instruction:   %cttz
+; SSE42: Found an estimated cost of 12 for instruction:   %cttz
+; AVX: Found an estimated cost of 12 for instruction:   %cttz
+; AVX2: Found an estimated cost of 12 for instruction:   %cttz
+; XOP: Found an estimated cost of 12 for instruction:   %cttz
+  %cttz = call <4 x i64> @llvm.cttz.v4i64(<4 x i64> %a, i1 1)
   ret <4 x i64> %cttz
 }
 
@@ -245,7 +356,18 @@ define <4 x i32> @var_cttz_v4i32(<4 x i32> %a) {
 ; AVX: Found an estimated cost of 12 for instruction:   %cttz
 ; AVX2: Found an estimated cost of 12 for instruction:   %cttz
 ; XOP: Found an estimated cost of 12 for instruction:   %cttz
-  %cttz = call <4 x i32> @llvm.cttz.v4i32(<4 x i32> %a)
+  %cttz = call <4 x i32> @llvm.cttz.v4i32(<4 x i32> %a, i1 0)
+  ret <4 x i32> %cttz
+}
+
+define <4 x i32> @var_cttz_v4i32u(<4 x i32> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_cttz_v4i32u':
+; SSE2: Found an estimated cost of 12 for instruction:   %cttz
+; SSE42: Found an estimated cost of 12 for instruction:   %cttz
+; AVX: Found an estimated cost of 12 for instruction:   %cttz
+; AVX2: Found an estimated cost of 12 for instruction:   %cttz
+; XOP: Found an estimated cost of 12 for instruction:   %cttz
+  %cttz = call <4 x i32> @llvm.cttz.v4i32(<4 x i32> %a, i1 1)
   ret <4 x i32> %cttz
 }
 
@@ -256,7 +378,18 @@ define <8 x i32> @var_cttz_v8i32(<8 x i32> %a) {
 ; AVX: Found an estimated cost of 24 for instruction:   %cttz
 ; AVX2: Found an estimated cost of 24 for instruction:   %cttz
 ; XOP: Found an estimated cost of 24 for instruction:   %cttz
-  %cttz = call <8 x i32> @llvm.cttz.v8i32(<8 x i32> %a)
+  %cttz = call <8 x i32> @llvm.cttz.v8i32(<8 x i32> %a, i1 0)
+  ret <8 x i32> %cttz
+}
+
+define <8 x i32> @var_cttz_v8i32u(<8 x i32> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_cttz_v8i32u':
+; SSE2: Found an estimated cost of 24 for instruction:   %cttz
+; SSE42: Found an estimated cost of 24 for instruction:   %cttz
+; AVX: Found an estimated cost of 24 for instruction:   %cttz
+; AVX2: Found an estimated cost of 24 for instruction:   %cttz
+; XOP: Found an estimated cost of 24 for instruction:   %cttz
+  %cttz = call <8 x i32> @llvm.cttz.v8i32(<8 x i32> %a, i1 1)
   ret <8 x i32> %cttz
 }
 
@@ -267,7 +400,18 @@ define <8 x i16> @var_cttz_v8i16(<8 x i16> %a) {
 ; AVX: Found an estimated cost of 24 for instruction:   %cttz
 ; AVX2: Found an estimated cost of 24 for instruction:   %cttz
 ; XOP: Found an estimated cost of 24 for instruction:   %cttz
-  %cttz = call <8 x i16> @llvm.cttz.v8i16(<8 x i16> %a)
+  %cttz = call <8 x i16> @llvm.cttz.v8i16(<8 x i16> %a, i1 0)
+  ret <8 x i16> %cttz
+}
+
+define <8 x i16> @var_cttz_v8i16u(<8 x i16> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_cttz_v8i16u':
+; SSE2: Found an estimated cost of 24 for instruction:   %cttz
+; SSE42: Found an estimated cost of 24 for instruction:   %cttz
+; AVX: Found an estimated cost of 24 for instruction:   %cttz
+; AVX2: Found an estimated cost of 24 for instruction:   %cttz
+; XOP: Found an estimated cost of 24 for instruction:   %cttz
+  %cttz = call <8 x i16> @llvm.cttz.v8i16(<8 x i16> %a, i1 1)
   ret <8 x i16> %cttz
 }
 
@@ -278,7 +422,18 @@ define <16 x i16> @var_cttz_v16i16(<16 x i16> %a) {
 ; AVX: Found an estimated cost of 48 for instruction:   %cttz
 ; AVX2: Found an estimated cost of 48 for instruction:   %cttz
 ; XOP: Found an estimated cost of 48 for instruction:   %cttz
-  %cttz = call <16 x i16> @llvm.cttz.v16i16(<16 x i16> %a)
+  %cttz = call <16 x i16> @llvm.cttz.v16i16(<16 x i16> %a, i1 0)
+  ret <16 x i16> %cttz
+}
+
+define <16 x i16> @var_cttz_v16i16u(<16 x i16> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_cttz_v16i16u':
+; SSE2: Found an estimated cost of 48 for instruction:   %cttz
+; SSE42: Found an estimated cost of 48 for instruction:   %cttz
+; AVX: Found an estimated cost of 48 for instruction:   %cttz
+; AVX2: Found an estimated cost of 48 for instruction:   %cttz
+; XOP: Found an estimated cost of 48 for instruction:   %cttz
+  %cttz = call <16 x i16> @llvm.cttz.v16i16(<16 x i16> %a, i1 1)
   ret <16 x i16> %cttz
 }
 
@@ -289,7 +444,18 @@ define <16 x i8> @var_cttz_v16i8(<16 x i8> %a) {
 ; AVX: Found an estimated cost of 48 for instruction:   %cttz
 ; AVX2: Found an estimated cost of 48 for instruction:   %cttz
 ; XOP: Found an estimated cost of 48 for instruction:   %cttz
-  %cttz = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> %a)
+  %cttz = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> %a, i1 0)
+  ret <16 x i8> %cttz
+}
+
+define <16 x i8> @var_cttz_v16i8u(<16 x i8> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_cttz_v16i8u':
+; SSE2: Found an estimated cost of 48 for instruction:   %cttz
+; SSE42: Found an estimated cost of 48 for instruction:   %cttz
+; AVX: Found an estimated cost of 48 for instruction:   %cttz
+; AVX2: Found an estimated cost of 48 for instruction:   %cttz
+; XOP: Found an estimated cost of 48 for instruction:   %cttz
+  %cttz = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> %a, i1 1)
   ret <16 x i8> %cttz
 }
 
@@ -300,7 +466,18 @@ define <32 x i8> @var_cttz_v32i8(<32 x i8> %a) {
 ; AVX: Found an estimated cost of 96 for instruction:   %cttz
 ; AVX2: Found an estimated cost of 96 for instruction:   %cttz
 ; XOP: Found an estimated cost of 96 for instruction:   %cttz
-  %cttz = call <32 x i8> @llvm.cttz.v32i8(<32 x i8> %a)
+  %cttz = call <32 x i8> @llvm.cttz.v32i8(<32 x i8> %a, i1 0)
+  ret <32 x i8> %cttz
+}
+
+define <32 x i8> @var_cttz_v32i8u(<32 x i8> %a) {
+; CHECK: 'Cost Model Analysis' for function 'var_cttz_v32i8u':
+; SSE2: Found an estimated cost of 96 for instruction:   %cttz
+; SSE42: Found an estimated cost of 96 for instruction:   %cttz
+; AVX: Found an estimated cost of 96 for instruction:   %cttz
+; AVX2: Found an estimated cost of 96 for instruction:   %cttz
+; XOP: Found an estimated cost of 96 for instruction:   %cttz
+  %cttz = call <32 x i8> @llvm.cttz.v32i8(<32 x i8> %a, i1 1)
   ret <32 x i8> %cttz
 }