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|
; RUN: opt < %s -S -passes=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
|
