Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/Transforms/InstCombine/align-external.ll

@@ -0,0 +1,41 @@
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+; Don't assume that external global variables or those with weak linkage have
+; their preferred alignment. They may only have the ABI minimum alignment.
+
+target datalayout = "i32:8:32"
+
+@A = external global i32
+@B = weak_odr global i32 0
+
+@C = available_externally global <4 x i32> zeroinitializer, align 4
+; CHECK: @C = available_externally global <4 x i32> zeroinitializer, align 4
+
+define i64 @foo(i64 %a) {
+  %t = ptrtoint i32* @A to i64
+  %s = shl i64 %a, 3
+  %r = or i64 %t, %s
+  %q = add i64 %r, 1
+  ret i64 %q
+}
+
+; CHECK-LABEL: define i64 @foo(i64 %a)
+; CHECK: %s = shl i64 %a, 3
+; CHECK: %r = or i64 %s, ptrtoint (i32* @A to i64)
+; CHECK: %q = add i64 %r, 1
+; CHECK: ret i64 %q
+
+define i32 @bar() {
+  %r = load i32, i32* @B, align 1
+  ret i32 %r
+}
+
+; CHECK-LABEL: @bar()
+; CHECK: align 1
+
+define void @vec_store() {
+  store <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32>* @C, align 4
+  ret void
+}
+; CHECK: define void @vec_store()
+; CHECK: store <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32>* @C, align 4