nfc add test cases for PowerPC vector instructions cost analysis

Author: Chen Zheng

llvm/test/Analysis/CostModel/PowerPC/insert_extract.ll

@@ -3,6 +3,7 @@
 ; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr8 -mattr=+vsx | FileCheck --check-prefix=CHECK-P8LE %s
 ; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr9 -mattr=+vsx | FileCheck --check-prefix=CHECK-P9BE %s
 ; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr9 -mattr=+vsx | FileCheck --check-prefix=CHECK-P9LE %s
+; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr10 -mattr=+vsx | FileCheck --check-prefix=CHECK-P10 %s
 
 target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
 target triple = "powerpc64-unknown-linux-gnu"
@@ -24,6 +25,10 @@ define i32 @insert(i32 %arg) {
 ; CHECK-P9LE-LABEL: 'insert'
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %x = insertelement <4 x i32> undef, i32 %arg, i32 0
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 undef
+;
+; CHECK-P10-LABEL: 'insert'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %x = insertelement <4 x i32> undef, i32 %arg, i32 0
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 undef
 ;
   %x = insertelement <4 x i32> undef, i32 %arg, i32 0
   ret i32 undef
@@ -46,6 +51,10 @@ define i32 @extract(<4 x i32> %arg) {
 ; CHECK-P9LE-LABEL: 'extract'
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %x = extractelement <4 x i32> %arg, i32 0
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 %x
+;
+; CHECK-P10-LABEL: 'extract'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %x = extractelement <4 x i32> %arg, i32 0
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 %x
 ;
   %x = extractelement <4 x i32> %arg, i32 0
   ret i32 %x
@@ -71,6 +80,11 @@ define void @test2xdouble(<2 x double> %arg1) {
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %v1 = extractelement <2 x double> %arg1, i32 0
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %v2 = extractelement <2 x double> %arg1, i32 1
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
+;
+; CHECK-P10-LABEL: 'test2xdouble'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %v1 = extractelement <2 x double> %arg1, i32 0
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %v2 = extractelement <2 x double> %arg1, i32 1
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
   %v1 = extractelement <2 x double> %arg1, i32 0
   %v2 = extractelement <2 x double> %arg1, i32 1
@@ -93,6 +107,10 @@ define void @test4xi32(<4 x i32> %v1, i32 %x1) {
 ; CHECK-P9LE-LABEL: 'test4xi32'
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %v2 = insertelement <4 x i32> %v1, i32 %x1, i32 2
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
+;
+; CHECK-P10-LABEL: 'test4xi32'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %v2 = insertelement <4 x i32> %v1, i32 %x1, i32 2
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
   %v2 = insertelement <4 x i32> %v1, i32 %x1, i32 2
   ret void
@@ -126,6 +144,13 @@ define void @vexti32(<4 x i32> %p1) {
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %i3 = extractelement <4 x i32> %p1, i32 2
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %i4 = extractelement <4 x i32> %p1, i32 3
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
+;
+; CHECK-P10-LABEL: 'vexti32'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %i1 = extractelement <4 x i32> %p1, i32 0
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %i2 = extractelement <4 x i32> %p1, i32 1
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %i3 = extractelement <4 x i32> %p1, i32 2
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %i4 = extractelement <4 x i32> %p1, i32 3
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
   %i1 = extractelement <4 x i32> %p1, i32 0
   %i2 = extractelement <4 x i32> %p1, i32 1
@@ -154,6 +179,11 @@ define void @vexti64(<2 x i64> %p1) {
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %i1 = extractelement <2 x i64> %p1, i32 0
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %i2 = extractelement <2 x i64> %p1, i32 1
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
+;
+; CHECK-P10-LABEL: 'vexti64'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %i1 = extractelement <2 x i64> %p1, i32 0
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %i2 = extractelement <2 x i64> %p1, i32 1
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
   %i1 = extractelement <2 x i64> %p1, i32 0
   %i2 = extractelement <2 x i64> %p1, i32 1
@@ -180,8 +210,213 @@ define void @vext(<8 x i16> %p1, <16 x i8> %p2) {
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %i1 = extractelement <8 x i16> %p1, i32 0
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %i2 = extractelement <16 x i8> %p2, i32 0
 ; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
+;
+; CHECK-P10-LABEL: 'vext'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %i1 = extractelement <8 x i16> %p1, i32 0
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %i2 = extractelement <16 x i8> %p2, i32 0
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
   %i1 = extractelement <8 x i16> %p1, i32 0
   %i2 = extractelement <16 x i8> %p2, i32 0
   ret void
 }
+
+define <2 x i64> @insert_i64_x(<2 x i64> %dest, i64 %arg, i32 %idx) {
+; CHECK-P7-LABEL: 'insert_i64_x'
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <2 x i64> %dest, i64 %arg, i32 %idx
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <2 x i64> %x
+;
+; CHECK-P8LE-LABEL: 'insert_i64_x'
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <2 x i64> %dest, i64 %arg, i32 %idx
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <2 x i64> %x
+;
+; CHECK-P9BE-LABEL: 'insert_i64_x'
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <2 x i64> %dest, i64 %arg, i32 %idx
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <2 x i64> %x
+;
+; CHECK-P9LE-LABEL: 'insert_i64_x'
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <2 x i64> %dest, i64 %arg, i32 %idx
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <2 x i64> %x
+;
+; CHECK-P10-LABEL: 'insert_i64_x'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <2 x i64> %dest, i64 %arg, i32 %idx
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <2 x i64> %x
+;
+  %x = insertelement <2 x i64> %dest, i64 %arg, i32 %idx
+  ret <2 x i64> %x
+}
+
+define <4 x i32> @insert_i32_x(<4 x i32> %dest, i32 %arg, i32 %idx) {
+; CHECK-P7-LABEL: 'insert_i32_x'
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <4 x i32> %dest, i32 %arg, i32 %idx
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <4 x i32> %x
+;
+; CHECK-P8LE-LABEL: 'insert_i32_x'
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <4 x i32> %dest, i32 %arg, i32 %idx
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <4 x i32> %x
+;
+; CHECK-P9BE-LABEL: 'insert_i32_x'
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %x = insertelement <4 x i32> %dest, i32 %arg, i32 %idx
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <4 x i32> %x
+;
+; CHECK-P9LE-LABEL: 'insert_i32_x'
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %x = insertelement <4 x i32> %dest, i32 %arg, i32 %idx
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <4 x i32> %x
+;
+; CHECK-P10-LABEL: 'insert_i32_x'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <4 x i32> %dest, i32 %arg, i32 %idx
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <4 x i32> %x
+;
+  %x = insertelement <4 x i32> %dest, i32 %arg, i32 %idx
+  ret <4 x i32> %x
+}
+
+define  <8 x i16> @insert_i16_x(<8 x i16> %dest, i16 %arg, i32 %idx) {
+; CHECK-P7-LABEL: 'insert_i16_x'
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <8 x i16> %dest, i16 %arg, i32 %idx
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <8 x i16> %x
+;
+; CHECK-P8LE-LABEL: 'insert_i16_x'
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <8 x i16> %dest, i16 %arg, i32 %idx
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <8 x i16> %x
+;
+; CHECK-P9BE-LABEL: 'insert_i16_x'
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %x = insertelement <8 x i16> %dest, i16 %arg, i32 %idx
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <8 x i16> %x
+;
+; CHECK-P9LE-LABEL: 'insert_i16_x'
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %x = insertelement <8 x i16> %dest, i16 %arg, i32 %idx
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <8 x i16> %x
+;
+; CHECK-P10-LABEL: 'insert_i16_x'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <8 x i16> %dest, i16 %arg, i32 %idx
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <8 x i16> %x
+;
+  %x = insertelement <8 x i16> %dest, i16 %arg, i32 %idx
+  ret <8 x i16> %x
+}
+
+define  <16 x i8> @insert_i8_x(<16 x i8> %dest, i8 %arg, i32 %idx) {
+; CHECK-P7-LABEL: 'insert_i8_x'
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <16 x i8> %dest, i8 %arg, i32 %idx
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <16 x i8> %x
+;
+; CHECK-P8LE-LABEL: 'insert_i8_x'
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <16 x i8> %dest, i8 %arg, i32 %idx
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <16 x i8> %x
+;
+; CHECK-P9BE-LABEL: 'insert_i8_x'
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %x = insertelement <16 x i8> %dest, i8 %arg, i32 %idx
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <16 x i8> %x
+;
+; CHECK-P9LE-LABEL: 'insert_i8_x'
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %x = insertelement <16 x i8> %dest, i8 %arg, i32 %idx
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <16 x i8> %x
+;
+; CHECK-P10-LABEL: 'insert_i8_x'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <16 x i8> %dest, i8 %arg, i32 %idx
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret <16 x i8> %x
+;
+  %x = insertelement <16 x i8> %dest, i8 %arg, i32 %idx
+  ret <16 x i8> %x
+}
+
+define i64 @extract_i64_x(<2 x i64> %arg, i32 %idx) {
+; CHECK-P7-LABEL: 'extract_i64_x'
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %x = extractelement <2 x i64> %arg, i32 %idx
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i64 %x
+;
+; CHECK-P8LE-LABEL: 'extract_i64_x'
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %x = extractelement <2 x i64> %arg, i32 %idx
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i64 %x
+;
+; CHECK-P9BE-LABEL: 'extract_i64_x'
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %x = extractelement <2 x i64> %arg, i32 %idx
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i64 %x
+;
+; CHECK-P9LE-LABEL: 'extract_i64_x'
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %x = extractelement <2 x i64> %arg, i32 %idx
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i64 %x
+;
+; CHECK-P10-LABEL: 'extract_i64_x'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %x = extractelement <2 x i64> %arg, i32 %idx
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i64 %x
+;
+  %x = extractelement <2 x i64> %arg, i32 %idx
+  ret i64 %x
+}
+
+define i32 @extract_i32_x(<4 x i32> %arg, i32 %idx) {
+; CHECK-P7-LABEL: 'extract_i32_x'
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %x = extractelement <4 x i32> %arg, i32 %idx
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 %x
+;
+; CHECK-P8LE-LABEL: 'extract_i32_x'
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %x = extractelement <4 x i32> %arg, i32 %idx
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 %x
+;
+; CHECK-P9BE-LABEL: 'extract_i32_x'
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %x = extractelement <4 x i32> %arg, i32 %idx
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 %x
+;
+; CHECK-P9LE-LABEL: 'extract_i32_x'
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %x = extractelement <4 x i32> %arg, i32 %idx
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 %x
+;
+; CHECK-P10-LABEL: 'extract_i32_x'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %x = extractelement <4 x i32> %arg, i32 %idx
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 %x
+;
+  %x = extractelement <4 x i32> %arg, i32 %idx
+  ret i32 %x
+}
+
+define i16 @extract_i16_x(<8 x i16> %arg, i32 %idx) {
+; CHECK-P7-LABEL: 'extract_i16_x'
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %x = extractelement <8 x i16> %arg, i32 %idx
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i16 %x
+;
+; CHECK-P8LE-LABEL: 'extract_i16_x'
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %x = extractelement <8 x i16> %arg, i32 %idx
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i16 %x
+;
+; CHECK-P9BE-LABEL: 'extract_i16_x'
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %x = extractelement <8 x i16> %arg, i32 %idx
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i16 %x
+;
+; CHECK-P9LE-LABEL: 'extract_i16_x'
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %x = extractelement <8 x i16> %arg, i32 %idx
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i16 %x
+;
+; CHECK-P10-LABEL: 'extract_i16_x'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %x = extractelement <8 x i16> %arg, i32 %idx
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i16 %x
+;
+  %x = extractelement <8 x i16> %arg, i32 %idx
+  ret i16 %x
+}
+
+define i8 @extract_i8_x(<16 x i8> %arg, i32 %idx) {
+; CHECK-P7-LABEL: 'extract_i8_x'
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %x = extractelement <16 x i8> %arg, i32 %idx
+; CHECK-P7-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i8 %x
+;
+; CHECK-P8LE-LABEL: 'extract_i8_x'
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %x = extractelement <16 x i8> %arg, i32 %idx
+; CHECK-P8LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i8 %x
+;
+; CHECK-P9BE-LABEL: 'extract_i8_x'
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %x = extractelement <16 x i8> %arg, i32 %idx
+; CHECK-P9BE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i8 %x
+;
+; CHECK-P9LE-LABEL: 'extract_i8_x'
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %x = extractelement <16 x i8> %arg, i32 %idx
+; CHECK-P9LE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i8 %x
+;
+; CHECK-P10-LABEL: 'extract_i8_x'
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %x = extractelement <16 x i8> %arg, i32 %idx
+; CHECK-P10-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i8 %x
+;
+  %x = extractelement <16 x i8> %arg, i32 %idx
+  ret i8 %x
+}