forked from OSchip/llvm-project
77 lines
1.4 KiB
LLVM
77 lines
1.4 KiB
LLVM
|
; RUN: opt < %s -S -loop-unroll -mtriple aarch64 -mcpu=cortex-a57 | FileCheck %s
|
||
|
|
|
||
|
|
; Partial unroll 8 times for this loop.
|
||
|
|
define void @unroll1() nounwind {
|
||
|
|
entry:
|
||
|
|
br label %loop
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%iv = phi i32 [ 0, %entry ], [ %inc, %loop ]
|
||
|
|
%inc = add i32 %iv, 1
|
||
|
|
%exitcnd = icmp uge i32 %inc, 1024
|
||
|
|
br i1 %exitcnd, label %exit, label %loop
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: icmp
|
||
|
|
|
||
|
|
; Partial unroll 16 times for this loop.
|
||
|
|
define void @unroll2() nounwind {
|
||
|
|
entry:
|
||
|
|
br label %loop1
|
||
|
|
|
||
|
|
loop1:
|
||
|
|
%iv1 = phi i32 [ 0, %entry ], [ %inc1, %loop1.latch ]
|
||
|
|
br label %loop2.header
|
||
|
|
|
||
|
|
loop2.header:
|
||
|
|
br label %loop2
|
||
|
|
|
||
|
|
loop2:
|
||
|
|
%iv2 = phi i32 [ 0, %loop2.header ], [ %inc2, %loop2 ]
|
||
|
|
%inc2 = add i32 %iv2, 1
|
||
|
|
%exitcnd2 = icmp uge i32 %inc2, 1024
|
||
|
|
br i1 %exitcnd2, label %exit2, label %loop2
|
||
|
|
|
||
|
|
exit2:
|
||
|
|
br label %loop1.latch
|
||
|
|
|
||
|
|
loop1.latch:
|
||
|
|
%inc1 = add i32 %iv1, 1
|
||
|
|
%exitcnd1 = icmp uge i32 %inc1, 1024
|
||
|
|
br i1 %exitcnd2, label %exit, label %loop1
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
; CHECK: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: add
|
||
|
|
; CHECK-NEXT: icmp
|