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1; RUN: llc -mtriple=aarch64-apple-darwin -O0 -fast-isel -fast-isel-abort=1 -verify-machineinstrs < %s | FileCheck %s2 3; CHECK-LABEL: int_ext_opt4define i64 @int_ext_opt(ptr %addr, i1 %c1, i1 %c2) {5entry:6 %0 = load i8, ptr %addr7 br i1 %c1, label %bb1, label %bb28 9bb1:10 %1 = zext i8 %0 to i6411 br i1 %c2, label %bb2, label %exit12 13bb2:14 %2 = phi i64 [1, %entry], [%1, %bb1]15 ret i64 %216 17exit:18 ret i64 019}20