lower optimization level, split out o2 test to its own file

Author: farzonl

clang/test/CodeGenHLSL/builtins/length-extract-optimization.hlsl

@@ -0,0 +1,24 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5
+// RUN: %clang_cc1 -finclude-default-header -triple \
+// RUN: dxil-pc-shadermodel6.3-library %s -fnative-half-type \
+// RUN: -emit-llvm -O2 -o - | FileCheck %s
+
+// CHECK-LABEL: define noundef float @_Z26test_length_float4_extractDv4_f(
+// CHECK-SAME: <4 x float> noundef [[P0:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    [[MUL_I:%.*]] = fmul <4 x float> [[P0]], [[P0]]
+// CHECK-NEXT:    [[VECEXT_I:%.*]] = extractelement <4 x float> [[MUL_I]], i64 0
+// CHECK-NEXT:    [[VECEXT1_I:%.*]] = extractelement <4 x float> [[MUL_I]], i64 1
+// CHECK-NEXT:    [[VECEXT1_I_1:%.*]] = extractelement <4 x float> [[MUL_I]], i64 2
+// CHECK-NEXT:    [[VECEXT1_I_2:%.*]] = extractelement <4 x float> [[MUL_I]], i64 3
+// CHECK-NEXT:    [[ADD_I12:%.*]] = fadd float [[VECEXT_I]], [[VECEXT1_I]]
+// CHECK-NEXT:    [[ADD_I12_1:%.*]] = fadd float [[ADD_I12]], [[VECEXT1_I_1]]
+// CHECK-NEXT:    [[ADD_I12_2:%.*]] = fadd float [[ADD_I12_1]], [[VECEXT1_I_2]]
+// CHECK-NEXT:    [[TMP0:%.*]] = tail call noundef float @llvm.sqrt.f32(float [[ADD_I12_2]])
+// CHECK-NEXT:    [[ADD:%.*]] = fadd float [[TMP0]], [[TMP0]]
+// CHECK-NEXT:    ret float [[ADD]]
+//
+float test_length_float4_extract(float4 p0)
+{
+  return length(p0) + length(p0);
+}

clang/test/CodeGenHLSL/builtins/length.hlsl

@@ -1,7 +1,7 @@
 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5
 // RUN: %clang_cc1 -finclude-default-header -triple \
 // RUN: dxil-pc-shadermodel6.3-library %s -fnative-half-type \
-// RUN: -emit-llvm -O2 -o - | FileCheck %s
+// RUN: -emit-llvm -O1 -o - | FileCheck %s
 
 // CHECK-LABEL: define noundef half @_Z16test_length_halfDh(
 // CHECK-SAME: half noundef [[P0:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
@@ -128,24 +128,3 @@ float test_length_float4(float4 p0)
 {
   return length(p0);
 }
-
-
-// CHECK-LABEL: define noundef float @_Z26test_length_float4_extractDv4_f(
-// CHECK-SAME: <4 x float> noundef [[P0:%.*]]) local_unnamed_addr #[[ATTR0]] {
-// CHECK-NEXT:  [[ENTRY:.*:]]
-// CHECK-NEXT:    [[MUL_I:%.*]] = fmul <4 x float> [[P0]], [[P0]]
-// CHECK-NEXT:    [[VECEXT_I:%.*]] = extractelement <4 x float> [[MUL_I]], i64 0
-// CHECK-NEXT:    [[VECEXT1_I:%.*]] = extractelement <4 x float> [[MUL_I]], i64 1
-// CHECK-NEXT:    [[VECEXT1_I_1:%.*]] = extractelement <4 x float> [[MUL_I]], i64 2
-// CHECK-NEXT:    [[VECEXT1_I_2:%.*]] = extractelement <4 x float> [[MUL_I]], i64 3
-// CHECK-NEXT:    [[ADD_I12:%.*]] = fadd float [[VECEXT_I]], [[VECEXT1_I]]
-// CHECK-NEXT:    [[ADD_I12_1:%.*]] = fadd float [[ADD_I12]], [[VECEXT1_I_1]]
-// CHECK-NEXT:    [[ADD_I12_2:%.*]] = fadd float [[ADD_I12_1]], [[VECEXT1_I_2]]
-// CHECK-NEXT:    [[TMP0:%.*]] = tail call noundef float @llvm.sqrt.f32(float [[ADD_I12_2]])
-// CHECK-NEXT:    [[ADD:%.*]] = fadd float [[TMP0]], [[TMP0]]
-// CHECK-NEXT:    ret float [[ADD]]
-//
-float test_length_float4_extract(float4 p0)
-{
-  return length(p0) + length(p0);
-}