mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-14 11:32:34 +00:00
74b576041a
Refactored parts of the hardware loop pass to generate more. Also, added more tests. Differential Revision: http://reviews.llvm.org/D9568 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236896 91177308-0d34-0410-b5e6-96231b3b80d8
50 lines
1.5 KiB
LLVM
50 lines
1.5 KiB
LLVM
; RUN: llc -march=hexagon -hexagon-hwloop-preheader < %s | FileCheck %s
|
|
|
|
; Generate hardware loops when we also need to add a new preheader.
|
|
; we should generate two hardware loops for this test case.
|
|
|
|
; CHECK: loop0
|
|
; CHECK: endloop0
|
|
; CHECK: loop0
|
|
; CHECK: endloop0
|
|
|
|
@g = external global i32
|
|
|
|
define void @test(i32* nocapture %a, i32* nocapture %b, i32 %n) nounwind {
|
|
entry:
|
|
%tobool = icmp eq i32 %n, 0
|
|
br i1 %tobool, label %for.body4.preheader, label %for.body.preheader
|
|
|
|
for.body.preheader:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%arrayidx.phi = phi i32* [ %arrayidx.inc, %for.body ], [ %a, %for.body.preheader ]
|
|
%i.014 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ]
|
|
%0 = load i32, i32* @g, align 4
|
|
store i32 %0, i32* %arrayidx.phi, align 4
|
|
%inc = add nsw i32 %i.014, 1
|
|
%exitcond15 = icmp eq i32 %inc, 3
|
|
%arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1
|
|
br i1 %exitcond15, label %for.body4.preheader.loopexit, label %for.body
|
|
|
|
for.body4.preheader.loopexit:
|
|
br label %for.body4.preheader
|
|
|
|
for.body4.preheader:
|
|
br label %for.body4
|
|
|
|
for.body4:
|
|
%arrayidx5.phi = phi i32* [ %arrayidx5.inc, %for.body4 ], [ %b, %for.body4.preheader ]
|
|
%i1.013 = phi i32 [ %inc7, %for.body4 ], [ 0, %for.body4.preheader ]
|
|
%1 = load i32, i32* @g, align 4
|
|
store i32 %1, i32* %arrayidx5.phi, align 4
|
|
%inc7 = add nsw i32 %i1.013, 1
|
|
%exitcond = icmp eq i32 %inc7, 3
|
|
%arrayidx5.inc = getelementptr i32, i32* %arrayidx5.phi, i32 1
|
|
br i1 %exitcond, label %for.end8, label %for.body4
|
|
|
|
for.end8:
|
|
ret void
|
|
}
|