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; RUN: opt < %s -instcombine -S | FileCheck %s
target datalayout = "e-m:e-i64:64-n8:16:32:64"
; Although i1 is not in the datalayout, we should treat it
; as a legal type because it is a fundamental type in IR.
; This means we should shrink the phi (sink the zexts).
define i64 @sink_i1_casts(i1 %cond1, i1 %cond2) {
; CHECK-LABEL: @sink_i1_casts(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 %cond1, label %if, label %end
; CHECK: if:
; CHECK-NEXT: br label %end
; CHECK: end:
; CHECK-NEXT: [[PHI_IN:%.*]] = phi i1 [ %cond1, %entry ], [ %cond2, %if ]
; CHECK-NEXT: [[PHI:%.*]] = zext i1 [[PHI_IN]] to i64
; CHECK-NEXT: ret i64 [[PHI]]
;
entry:
%z1 = zext i1 %cond1 to i64
br i1 %cond1, label %if, label %end
if:
%z2 = zext i1 %cond2 to i64
br label %end
end:
%phi = phi i64 [ %z1, %entry ], [ %z2, %if ]
ret i64 %phi
}
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