================
@@ -0,0 +1,42 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
UTC_ARGS: --version 6
+// RUN: %clang_cc1 -fenable-matrix -triple arm64-apple-macosx %s -emit-llvm
-disable-llvm-passes -o - | FileCheck %s
+
+typedef float float3 __attribute__((ext_vector_type(3)));
+struct Vec3 {
+ union {
+ struct {
+ float x;
+ float y;
+ float z;
+ };
+ float vec __attribute__((ext_vector_type(3)));
+ };
+};
+
+// CHECK-LABEL: define i128 @add(
+// CHECK-SAME: i128 [[A_COERCE:%.*]]) #[[ATTR0:[0-9]+]] {
+// CHECK-NEXT: [[ENTRY:.*:]]
+// CHECK-NEXT: [[RETVAL:%.*]] = alloca [[STRUCT_VEC3:%.*]], align 16
+// CHECK-NEXT: [[A:%.*]] = alloca [[STRUCT_VEC3]], align 16
+// CHECK-NEXT: [[COERCE_DIVE:%.*]] = getelementptr inbounds nuw
[[STRUCT_VEC3]], ptr [[A]], i32 0, i32 0
+// CHECK-NEXT: store i128 [[A_COERCE]], ptr [[COERCE_DIVE]], align 16
+// CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds nuw [[STRUCT_VEC3]],
ptr [[A]], i32 0, i32 0
+// CHECK-NEXT: [[LOADVECN:%.*]] = load <4 x float>, ptr [[TMP0]], align 16
+// CHECK-NEXT: [[EXTRACTVEC:%.*]] = shufflevector <4 x float> [[LOADVECN]],
<4 x float> poison, <3 x i32> <i32 0, i32 1, i32 2>
+// CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds nuw [[STRUCT_VEC3]],
ptr [[A]], i32 0, i32 0
+// CHECK-NEXT: [[LOADVECN1:%.*]] = load <4 x float>, ptr [[TMP1]], align 16
+// CHECK-NEXT: [[EXTRACTVEC2:%.*]] = shufflevector <4 x float>
[[LOADVECN1]], <4 x float> poison, <3 x i32> <i32 0, i32 1, i32 2>
+// CHECK-NEXT: [[ADD:%.*]] = fadd <3 x float> [[EXTRACTVEC]],
[[EXTRACTVEC2]]
+// CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds nuw [[STRUCT_VEC3]],
ptr [[RETVAL]], i32 0, i32 0
+// CHECK-NEXT: [[EXTRACTVEC3:%.*]] = shufflevector <3 x float> [[ADD]], <3
x float> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 poison>
----------------
jroelofs wrote:
why is the _index_ of the last lane of the shuffle poison? Don't we want the
shuffle to select one of the lanes from the second `undef` argument?
https://github.com/llvm/llvm-project/pull/164821
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