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-rw-r--r--test/Transforms/ConstantMerge/merge-both.ll17
1 files changed, 15 insertions, 2 deletions
diff --git a/test/Transforms/ConstantMerge/merge-both.ll b/test/Transforms/ConstantMerge/merge-both.ll
index 0282f46..b71eb43 100644
--- a/test/Transforms/ConstantMerge/merge-both.ll
+++ b/test/Transforms/ConstantMerge/merge-both.ll
@@ -1,5 +1,7 @@
; RUN: opt -constmerge %s -S -o - | FileCheck %s
; Test that in one run var3 is merged into var2 and var1 into var4.
+; Test that we merge @var5 and @var6 into one with the higher alignment, and
+; don't merge var7/var8 into var5/var6.
declare void @zed(%struct.foobar*, %struct.foobar*)
@@ -14,13 +16,24 @@ declare void @zed(%struct.foobar*, %struct.foobar*)
; CHECK-NOT: @
; CHECK: @var2 = constant %struct.foobar { i32 2 }
; CHECK-NEXT: @var4 = constant %struct.foobar { i32 2 }
-; CHECK-NOT: @
-; CHECK: declare void @zed(%struct.foobar*, %struct.foobar*)
+
+declare void @helper([16 x i8]*)
+@var5 = internal constant [16 x i8] c"foo1bar2foo3bar\00", align 16
+@var6 = private unnamed_addr constant [16 x i8] c"foo1bar2foo3bar\00", align 1
+@var7 = internal constant [16 x i8] c"foo1bar2foo3bar\00"
+@var8 = private unnamed_addr constant [16 x i8] c"foo1bar2foo3bar\00"
+
+; CHECK-NEXT: @var6 = private constant [16 x i8] c"foo1bar2foo3bar\00", align 16
+; CHECK-NEXT: @var8 = private constant [16 x i8] c"foo1bar2foo3bar\00"
define i32 @main() {
entry:
call void @zed(%struct.foobar* @var1, %struct.foobar* @var2)
call void @zed(%struct.foobar* @var3, %struct.foobar* @var4)
+ call void @helper([16 x i8]* @var5)
+ call void @helper([16 x i8]* @var6)
+ call void @helper([16 x i8]* @var7)
+ call void @helper([16 x i8]* @var8)
ret i32 0
}