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-rw-r--r--test/CodeGen/X86/address-type-promotion-constantexpr.ll16
1 files changed, 16 insertions, 0 deletions
diff --git a/test/CodeGen/X86/address-type-promotion-constantexpr.ll b/test/CodeGen/X86/address-type-promotion-constantexpr.ll
new file mode 100644
index 0000000..32f29bd
--- /dev/null
+++ b/test/CodeGen/X86/address-type-promotion-constantexpr.ll
@@ -0,0 +1,16 @@
+; RUN: llc < %s -mtriple=x86_64-pc-linux
+
+; PR20314 is a crashing bug. This program does nothing with the load, so just check that the return is 0.
+
+@c = common global [2 x i32] zeroinitializer, align 4
+@a = common global i32 0, align 4
+@b = internal unnamed_addr constant [2 x i8] c"\01\00", align 1
+
+; CHECK-LABEL: main
+; CHECK: xor %eax, %eax
+define i32 @main() {
+entry:
+ %foo = load i8* getelementptr ([2 x i8]* @b, i64 0, i64 sext (i8 or (i8 zext (i1 icmp eq (i32* getelementptr inbounds ([2 x i32]* @c, i64 0, i64 1), i32* @a) to i8), i8 1) to i64)), align 1
+ ret i32 0
+}
+