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| ; RUN: llc -O3 -mtriple arm64-apple-ios5.0.0 < %s | FileCheck %s
; <rdar://problem/15992732>
; Zero truncation is not necessary when the values are extended properly
; already.
@block = common global i8* null, align 8
define zeroext i8 @foo(i32 %i1, i32 %i2) {
; CHECK-LABEL: foo:
; CHECK: cset
; CHECK-NOT: and
entry:
%idxprom = sext i32 %i1 to i64
%0 = load i8*, i8** @block, align 8
%arrayidx = getelementptr inbounds i8, i8* %0, i64 %idxprom
%1 = load i8, i8* %arrayidx, align 1
%idxprom1 = sext i32 %i2 to i64
%arrayidx2 = getelementptr inbounds i8, i8* %0, i64 %idxprom1
%2 = load i8, i8* %arrayidx2, align 1
%cmp = icmp eq i8 %1, %2
br i1 %cmp, label %return, label %if.then
if.then: ; preds = %entry
%cmp7 = icmp ugt i8 %1, %2
%conv9 = zext i1 %cmp7 to i8
br label %return
return: ; preds = %entry, %if.then
%retval.0 = phi i8 [ %conv9, %if.then ], [ 1, %entry ]
ret i8 %retval.0
}
|