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authorEli Friedman <eli.friedman@gmail.com>2011-11-30 21:54:15 +0000
committerEli Friedman <eli.friedman@gmail.com>2011-11-30 21:54:15 +0000
commit6cff9df2984bd52b455023f5841289c6cfafed6e (patch)
tree4947a6021936a784dc32fc8fe6a890c4232e4151 /llvm/test/CodeGen/ARM/2011-11-30-MergeAlignment.ll
parentad8b58b2ac96b94b3cbd6afedfcd6a5c66fd3f06 (diff)
downloadbcm5719-llvm-6cff9df2984bd52b455023f5841289c6cfafed6e.tar.gz
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Make GlobalMerge honor the preferred alignment on globals without an explicitly specified alignment.
<rdar://problem/10497732>. llvm-svn: 145523
Diffstat (limited to 'llvm/test/CodeGen/ARM/2011-11-30-MergeAlignment.ll')
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diff --git a/llvm/test/CodeGen/ARM/2011-11-30-MergeAlignment.ll b/llvm/test/CodeGen/ARM/2011-11-30-MergeAlignment.ll
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index 00000000000..0c90f4cf949
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/2011-11-30-MergeAlignment.ll
@@ -0,0 +1,24 @@
+; RUN: llc < %s | FileCheck %s
+; <rdar://problem/10497732>
+
+target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32"
+target triple = "thumbv7-apple-darwin10"
+
+@x1 = internal global i32 1
+@x2 = internal global i64 12
+
+define i64 @f() {
+ %ax = load i32* @x1
+ %a = zext i32 %ax to i64
+ %b = load i64* @x2
+ %c = add i64 %a, %b
+ ret i64 %c
+}
+
+; We can global-merge the i64 in theory, but the current code doesn't handle
+; the alignment correctly; for the moment, just check that we don't do it.
+; See also
+
+; CHECK-NOT: MergedGlobals
+; CHECK: _x2
+; CHECK-NOT: MergedGlobals
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