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1; XFAIL: *2; RUN: opt < %s -passes=newgvn -S | FileCheck %s3 4; GVN should eliminate the fully redundant %9 GEP which 5; allows DEAD to be removed. This is PR3198.6 7; The %7 and %4 loads combine to make %DEAD unneeded.8target 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"9target triple = "i386-apple-darwin7"10@H = common global [100 x i32] zeroinitializer, align 32 ; <ptr> [#uses=3]11@G = common global i32 0 ; <ptr> [#uses=2]12 13define i32 @test(i32 %i) nounwind {14entry:15 %0 = tail call i32 (...) @foo() nounwind ; <i32> [#uses=1]16 %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1]17 br i1 %1, label %bb1, label %bb18 19bb: ; preds = %entry20 %2 = tail call i32 (...) @bar() nounwind ; <i32> [#uses=0]21 %3 = getelementptr [100 x i32], ptr @H, i32 0, i32 %i ; <ptr> [#uses=1]22 %4 = load i32, ptr %3, align 4 ; <i32> [#uses=1]23 store i32 %4, ptr @G, align 424 br label %bb325 26bb1: ; preds = %entry27 %5 = tail call i32 (...) @baz() nounwind ; <i32> [#uses=0]28 %6 = getelementptr [100 x i32], ptr @H, i32 0, i32 %i ; <ptr> [#uses=1]29 %7 = load i32, ptr %6, align 4 ; <i32> [#uses=2]30 store i32 %7, ptr @G, align 431 %8 = icmp eq i32 %7, 0 ; <i1> [#uses=1]32 br i1 %8, label %bb3, label %bb433 34bb3: ; preds = %bb1, %bb35 %9 = getelementptr [100 x i32], ptr @H, i32 0, i32 %i ; <ptr> [#uses=1]36 %DEAD = load i32, ptr %9, align 4 ; <i32> [#uses=1]37; CHECK: %DEAD = phi i32 [ 0, %bb1 ], [ %4, %bb ]38 ret i32 %DEAD39 40bb4: ; preds = %bb141 ret i32 042}43 44declare i32 @foo(...)45 46declare i32 @bar(...)47 48declare i32 @baz(...)49