|  | ; RUN: llc -mtriple=arm64-apple-darwin -aarch64-enable-atomic-cfg-tidy=0                               -verify-machineinstrs < %s | FileCheck %s | 
|  | ; RUN: llc -mtriple=arm64-apple-darwin -aarch64-enable-atomic-cfg-tidy=0 -fast-isel -fast-isel-abort=1 -verify-machineinstrs < %s | FileCheck %s | 
|  |  | 
|  | ; Test if the BBs are reordred according to their branch weights. | 
|  | define i64 @branch_weights_test(i64 %a, i64 %b) { | 
|  | ; CHECK-LABEL: branch_weights_test | 
|  | ; CHECK-LABEL: success | 
|  | ; CHECK-LABEL: fail | 
|  | %1 = icmp ult i64 %a, %b | 
|  | br i1 %1, label %fail, label %success, !prof !0 | 
|  |  | 
|  | fail: | 
|  | ret i64 -1 | 
|  |  | 
|  | success: | 
|  | ret i64 0 | 
|  | } | 
|  |  | 
|  | !0 = !{!"branch_weights", i32 0, i32 2147483647} |