File: fast-isel-branch_weights.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (19 lines) | stat: -rw-r--r-- 656 bytes parent folder | download | duplicates (30) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
; 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}