1 files changed, 47 insertions, 0 deletions
diff --git a/test/CodeGen/X86/fold-load.ll b/test/CodeGen/X86/fold-load.ll
new file mode 100644
index 0000000..5525af2
--- /dev/null
+++ b/test/CodeGen/X86/fold-load.ll
@@ -0,0 +1,47 @@
+; RUN: llc < %s -march=x86 | FileCheck %s
+	%struct._obstack_chunk = type { i8*, %struct._obstack_chunk*, [4 x i8] }
+	%struct.obstack = type { i32, %struct._obstack_chunk*, i8*, i8*, i8*, i32, i32, %struct._obstack_chunk* (...)*, void (...)*, i8*, i8 }
+@stmt_obstack = external global %struct.obstack		; <%struct.obstack*> [#uses=1]
+
+; This should just not crash.
+define void @test1() nounwind {
+entry:
+	br i1 true, label %cond_true, label %cond_next
+
+cond_true:		; preds = %entry
+	%new_size.0.i = select i1 false, i32 0, i32 0		; <i32> [#uses=1]
+	%tmp.i = load i32* bitcast (i8* getelementptr (%struct.obstack* @stmt_obstack, i32 0, i32 10) to i32*)		; <i32> [#uses=1]
+	%tmp.i.upgrd.1 = trunc i32 %tmp.i to i8		; <i8> [#uses=1]
+	%tmp21.i = and i8 %tmp.i.upgrd.1, 1		; <i8> [#uses=1]
+	%tmp22.i = icmp eq i8 %tmp21.i, 0		; <i1> [#uses=1]
+	br i1 %tmp22.i, label %cond_false30.i, label %cond_true23.i
+
+cond_true23.i:		; preds = %cond_true
+	ret void
+
+cond_false30.i:		; preds = %cond_true
+	%tmp35.i = tail call %struct._obstack_chunk* null( i32 %new_size.0.i )		; <%struct._obstack_chunk*> [#uses=0]
+	ret void
+
+cond_next:		; preds = %entry
+	ret void
+}
+
+
+
+define i32 @test2(i16* %P, i16* %Q) nounwind {
+  %A = load i16* %P, align 4                      ; <i16> [#uses=11]
+  %C = zext i16 %A to i32                         ; <i32> [#uses=1]
+  %D = and i32 %C, 255                            ; <i32> [#uses=1]
+  br label %L
+L:
+
+  store i16 %A, i16* %Q
+  ret i32 %D
+  
+; CHECK: test2:
+; CHECK: 	movl	4(%esp), %eax
+; CHECK-NEXT:	movzwl	(%eax), %ecx
+
+}
+