; Do not promote getelementptr because it may exposes load from a null pointer
; and store from a null pointer which are covered by
; icmp eq %struct.decision* null, null condition.
-; RUN: llvm-as < %s | opt -licm | llvm-dis | not grep promoted
+; RUN: opt < %s -licm -S | not grep promoted
%struct.decision = type { i8, %struct.decision* }
define i32 @main() {
unreachable
}
+define i32 @f(i8* %ptr) {
+entry:
+ br label %loop.head
+
+loop.head: ; preds = %cond.true, %entry
+ %x = phi i8* [ %ptr, %entry ], [ %ptr.i, %cond.true ] ; <i8*> [#uses=1]
+ %tmp3.i = icmp ne i8* %ptr, %x ; <i1> [#uses=1]
+ br i1 %tmp3.i, label %cond.true, label %exit
+
+cond.true: ; preds = %loop.head
+ %ptr.i = getelementptr i8* %ptr, i32 0 ; <i8*> [#uses=2]
+ store i8 0, i8* %ptr.i
+ br label %loop.head
+
+exit: ; preds = %loop.head
+ ret i32 0
+}
+
+define i32 @f2(i8* %p, i8* %q) {
+entry:
+ br label %loop.head
+
+loop.head: ; preds = %cond.true, %entry
+ %tmp3.i = icmp eq i8* null, %q ; <i1> [#uses=1]
+ br i1 %tmp3.i, label %exit, label %cond.true
+
+cond.true: ; preds = %loop.head
+ %ptr.i = getelementptr i8* %p, i32 0 ; <i8*> [#uses=2]
+ store i8 0, i8* %ptr.i
+ br label %loop.head
+
+exit: ; preds = %loop.head
+ ret i32 0
+}
+
declare void @exit(i32)