1 ; RUN: opt < %s -gvn -enable-pre -S | grep {.pre} 2 3 @H = common global i32 0 ; <i32*> [#uses=2] 4 @G = common global i32 0 ; <i32*> [#uses=1] 5 6 define i32 @test() nounwind { 7 entry: 8 %0 = load i32* @H, align 4 ; <i32> [#uses=2] 9 %1 = call i32 (...)* @foo() nounwind ; <i32> [#uses=1] 10 %2 = icmp ne i32 %1, 0 ; <i1> [#uses=1] 11 br i1 %2, label %bb, label %bb1 12 13 bb: ; preds = %entry 14 %3 = add i32 %0, 42 ; <i32> [#uses=1] 15 store i32 %3, i32* @G, align 4 16 br label %bb1 17 18 bb1: ; preds = %bb, %entry 19 %4 = add i32 %0, 42 ; <i32> [#uses=1] 20 store i32 %4, i32* @H, align 4 21 br label %return 22 23 return: ; preds = %bb1 24 ret i32 0 25 } 26 27 declare i32 @foo(...) 28
