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-rw-r--r--test/Transforms/InstCombine/enforce-known-alignment.ll18
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/enforce-known-alignment.ll b/test/Transforms/InstCombine/enforce-known-alignment.ll
new file mode 100644
index 000000000000..6ac24a85a22e
--- /dev/null
+++ b/test/Transforms/InstCombine/enforce-known-alignment.ll
@@ -0,0 +1,18 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep alloca | grep {align 16}
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "i386-apple-darwin9.6"
+
+define void @foo(i32) {
+ %2 = alloca [3 x <{ { { [2 x { { i32 } }], [2 x i8], { i16 }, [2 x i8], i8, i8 } } }>], align 16 ; <[3 x <{ { { [2 x { { i32 } }], [2 x i8], { i16 }, [2 x i8], i8, i8 } } }>]*> [#uses=1]
+ %3 = getelementptr [3 x <{ { { [2 x { { i32 } }], [2 x i8], { i16 }, [2 x i8], i8, i8 } } }>]* %2, i32 0, i32 0 ; <<{ { { [2 x { { i32 } }], [2 x i8], { i16 }, [2 x i8], i8, i8 } } }>*> [#uses=1]
+ %4 = getelementptr <{ { { [2 x { { i32 } }], [2 x i8], { i16 }, [2 x i8], i8, i8 } } }>* %3, i32 0, i32 0 ; <{ { [2 x { { i32 } }], [2 x i8], { i16 }, [2 x i8], i8, i8 } }*> [#uses=1]
+ %5 = getelementptr { { [2 x { { i32 } }], [2 x i8], { i16 }, [2 x i8], i8, i8 } }* %4, i32 0, i32 0 ; <{ [2 x { { i32 } }], [2 x i8], { i16 }, [2 x i8], i8, i8 }*> [#uses=1]
+ %6 = bitcast { [2 x { { i32 } }], [2 x i8], { i16 }, [2 x i8], i8, i8 }* %5 to { [8 x i16] }* ; <{ [8 x i16] }*> [#uses=1]
+ %7 = getelementptr { [8 x i16] }* %6, i32 0, i32 0 ; <[8 x i16]*> [#uses=1]
+ %8 = getelementptr [8 x i16]* %7, i32 0, i32 0 ; <i16*> [#uses=1]
+ store i16 0, i16* %8, align 16
+ call void @bar(i16* %8)
+ ret void
+}
+
+declare void @bar(i16*)