1 files changed, 38 insertions, 0 deletions
diff --git a/test/Transforms/LoadStoreVectorizer/X86/load-width.ll b/test/Transforms/LoadStoreVectorizer/X86/load-width.ll
new file mode 100644
index 000000000000..a61b25119a14
--- /dev/null
+++ b/test/Transforms/LoadStoreVectorizer/X86/load-width.ll
@@ -0,0 +1,38 @@
+; RUN: opt -mtriple=x86_64-unknown-linux-gnu -load-store-vectorizer -mcpu haswell -S -o - %s | FileCheck --check-prefix=CHECK-HSW %s
+; RUN: opt -mtriple=x86_64-unknown-linux-gnu -load-store-vectorizer -mcpu knl -S -o - %s | FileCheck --check-prefix=CHECK-KNL %s
+
+define <8 x double> @loadwidth_insert_extract(double* %ptr) {
+    %a = bitcast double* %ptr to <2 x double> *
+    %b = getelementptr <2 x double>, <2 x double>* %a, i32 1
+    %c = getelementptr <2 x double>, <2 x double>* %a, i32 2
+    %d = getelementptr <2 x double>, <2 x double>* %a, i32 3
+; CHECK-HSW: load <4 x double>
+; CHECK-HSW: load <4 x double>
+; CHECK-HSW-NOT: load
+; CHECK-KNL: load <8 x double>
+; CHECK-KNL-NOT: load
+    %la = load <2 x double>, <2 x double> *%a
+    %lb = load <2 x double>, <2 x double> *%b
+    %lc = load <2 x double>, <2 x double> *%c
+    %ld = load <2 x double>, <2 x double> *%d
+    ; Scalarize everything - Explicitly not a shufflevector to test this code
+    ; path in the LSV
+    %v1 = extractelement <2 x double> %la, i32 0
+    %v2 = extractelement <2 x double> %la, i32 1
+    %v3 = extractelement <2 x double> %lb, i32 0
+    %v4 = extractelement <2 x double> %lb, i32 1
+    %v5 = extractelement <2 x double> %lc, i32 0
+    %v6 = extractelement <2 x double> %lc, i32 1
+    %v7 = extractelement <2 x double> %ld, i32 0
+    %v8 = extractelement <2 x double> %ld, i32 1
+    ; Make a vector again
+    %i1 = insertelement <8 x double> undef, double %v1, i32 0
+    %i2 = insertelement <8 x double> %i1, double %v2, i32 1
+    %i3 = insertelement <8 x double> %i2, double %v3, i32 2
+    %i4 = insertelement <8 x double> %i3, double %v4, i32 3
+    %i5 = insertelement <8 x double> %i4, double %v5, i32 4
+    %i6 = insertelement <8 x double> %i5, double %v6, i32 5
+    %i7 = insertelement <8 x double> %i6, double %v7, i32 6
+    %i8 = insertelement <8 x double> %i7, double %v8, i32 7
+    ret <8 x double> %i8
+}