[PowerPC] Precommit testcases for regpressure compute fix

llvm/test/CodeGen/PowerPC/compute-regpressure.ll

@@ -0,0 +1,30 @@
+; REQUIRES: asserts
+; RUN: llc -debug-only=regalloc < %s 2>&1 |FileCheck %s --check-prefix=DEBUG
+
+; DEBUG-COUNT-3:         AllocationOrder(VRSAVERC) = [ ]
+
+target triple = "powerpc64le-unknown-linux-gnu"
+
+define hidden fastcc void @test() {
+freescalar:
+  %0 = load i32, i32* undef, align 4
+  br label %if.end420
+
+if.end420:                                        ; preds = %freescalar
+  br label %free_rv
+
+free_rv:                                          ; preds = %if.end420
+  %and427 = and i32 %0, -2147481600
+  %cmp428 = icmp eq i32 %and427, -2147481600
+  br i1 %cmp428, label %if.then430, label %free_body
+
+if.then430:                                       ; preds = %free_rv
+  call fastcc void undef()
+  br label %free_body
+
+free_body:                                        ; preds = %if.then430, %free_rv
+  %or502 = or i32 undef, 255
+  store i32 %or502, i32* undef, align 4
+  ret void
+}
+