1 ; RUN: opt < %s -passes=gvn -enable-pre -S | FileCheck %s
2 ; RUN: opt < %s -passes="gvn<pre>" -enable-pre=false -S | FileCheck %s
4 @H = common global i32 0 ; <ptr> [#uses=2]
5 @G = common global i32 0 ; <ptr> [#uses=1]
7 define i32 @test() nounwind {
9 %0 = load i32, ptr @H, align 4 ; <i32> [#uses=2]
10 %1 = call i32 (...) @foo() nounwind ; <i32> [#uses=1]
11 %2 = icmp ne i32 %1, 0 ; <i1> [#uses=1]
12 br i1 %2, label %bb, label %bb1
15 %3 = add i32 %0, 42 ; <i32> [#uses=1]
16 ; CHECK: %.pre = add i32 %0, 42
17 store i32 %3, ptr @G, align 4
20 bb1: ; preds = %bb, %entry
21 %4 = add i32 %0, 42 ; <i32> [#uses=1]
22 store i32 %4, ptr @H, align 4
25 ; CHECK: %.pre-phi = phi i32 [ %.pre, %entry.bb1_crit_edge ], [ %3, %bb ]
26 ; CHECK-NEXT: store i32 %.pre-phi, ptr @H, align 4
27 ; CHECK-NEXT: ret i32 0
29 return: ; preds = %bb1