[SystemZ] Prefer comparisons with zero
Convert >= 1 to > 0, etc. Using comparison with zero isn't a win on its own,
but it exposes more opportunities for CC reuse (the next patch).
llvm-svn: 187571
diff --git a/llvm/test/CodeGen/SystemZ/int-cmp-22.ll b/llvm/test/CodeGen/SystemZ/int-cmp-22.ll
index ea16604..43daec9 100644
--- a/llvm/test/CodeGen/SystemZ/int-cmp-22.ll
+++ b/llvm/test/CodeGen/SystemZ/int-cmp-22.ll
@@ -18,8 +18,8 @@
; Check comparisons with 1.
define double @f2(double %a, double %b, i16 *%ptr) {
; CHECK-LABEL: f2:
-; CHECK: chhsi 0(%r2), 1
-; CHECK-NEXT: jl
+; CHECK: chhsi 0(%r2), 0
+; CHECK-NEXT: jle
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%val = load i16 *%ptr