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1; RUN: llc -O3 -mtriple arm64-apple-ios5.0.0 < %s | FileCheck %s2; <rdar://problem/15992732>3; Zero truncation is not necessary when the values are extended properly4; already.5 6@block = common global ptr null, align 87 8define zeroext i8 @foo(i32 %i1, i32 %i2) {9; CHECK-LABEL: foo:10; CHECK: cset11; CHECK-NOT: and12entry:13 %idxprom = sext i32 %i1 to i6414 %0 = load ptr, ptr @block, align 815 %arrayidx = getelementptr inbounds i8, ptr %0, i64 %idxprom16 %1 = load i8, ptr %arrayidx, align 117 %idxprom1 = sext i32 %i2 to i6418 %arrayidx2 = getelementptr inbounds i8, ptr %0, i64 %idxprom119 %2 = load i8, ptr %arrayidx2, align 120 %cmp = icmp eq i8 %1, %221 br i1 %cmp, label %return, label %if.then22 23if.then: ; preds = %entry24 %cmp7 = icmp ugt i8 %1, %225 %conv9 = zext i1 %cmp7 to i826 br label %return27 28return: ; preds = %entry, %if.then29 %retval.0 = phi i8 [ %conv9, %if.then ], [ 1, %entry ]30 ret i8 %retval.031}32