; RUN: opt < %s -basicaa -gvn -S | grep "DEAD = phi i32 " ; GVN should eliminate the fully redundant %9 GEP which ; allows DEAD to be removed. This is PR3198. ; The %7 and %4 loads combine to make %DEAD unneeded. target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" target triple = "i386-apple-darwin7" @H = common global [100 x i32] zeroinitializer, align 32 ; <[100 x i32]*> [#uses=3] @G = common global i32 0 ; <i32*> [#uses=2] define i32 @test(i32 %i) nounwind { entry: %0 = tail call i32 (...)* @foo() nounwind ; <i32> [#uses=1] %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] br i1 %1, label %bb1, label %bb bb: ; preds = %entry %2 = tail call i32 (...)* @bar() nounwind ; <i32> [#uses=0] %3 = getelementptr [100 x i32]* @H, i32 0, i32 %i ; <i32*> [#uses=1] %4 = load i32* %3, align 4 ; <i32> [#uses=1] store i32 %4, i32* @G, align 4 br label %bb3 bb1: ; preds = %entry %5 = tail call i32 (...)* @baz() nounwind ; <i32> [#uses=0] %6 = getelementptr [100 x i32]* @H, i32 0, i32 %i ; <i32*> [#uses=1] %7 = load i32* %6, align 4 ; <i32> [#uses=2] store i32 %7, i32* @G, align 4 %8 = icmp eq i32 %7, 0 ; <i1> [#uses=1] br i1 %8, label %bb3, label %bb4 bb3: ; preds = %bb1, %bb %9 = getelementptr [100 x i32]* @H, i32 0, i32 %i ; <i32*> [#uses=1] %DEAD = load i32* %9, align 4 ; <i32> [#uses=1] ret i32 %DEAD bb4: ; preds = %bb1 ret i32 0 } declare i32 @foo(...) declare i32 @bar(...) declare i32 @baz(...)