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1; RUN: opt < %s -passes=gvn2; PR20323 4define i32 @sscal(i32 %n, double %sa1, ptr %sx, i32 %incx) {5entry:6 %sx_addr = alloca ptr ; <ptr> [#uses=3]7 store ptr %sx, ptr %sx_addr, align 48 br label %bb339 10bb: ; preds = %bb3311 %tmp27 = load ptr, ptr %sx_addr, align 4 ; <ptr> [#uses=1]12 store float 0.000000e+00, ptr %tmp27, align 413 store ptr null, ptr %sx_addr, align 414 br label %bb3315 16bb33: ; preds = %bb, %entry17 br i1 false, label %bb, label %return18 19return: ; preds = %bb3320 %retval59 = load i32, ptr null, align 4 ; <i32> [#uses=1]21 ret i32 %retval5922}23