llvm-6502/test/CodeGen/Hexagon/hwloop-lt1.ll
Krzysztof Parzyszek 71490fa946 Extend Hexagon hardware loop generation to handle various additional cases:
- variety of compare instructions,
- loops with no preheader,
- arbitrary lower and upper bounds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174904 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-11 21:37:55 +00:00

33 lines
1.3 KiB
LLVM

; RUN: llc -march=hexagon -mcpu=hexagonv4 < %s | FileCheck %s
; Check that we generate a hardware loop instruction.
; CHECK: endloop0
@A = common global [400 x i8] zeroinitializer, align 8
@B = common global [400 x i8] zeroinitializer, align 8
@C = common global [400 x i8] zeroinitializer, align 8
define void @run() nounwind {
entry:
br label %polly.loop_body
polly.loop_after: ; preds = %polly.loop_body
ret void
polly.loop_body: ; preds = %entry, %polly.loop_body
%polly.loopiv16 = phi i32 [ 0, %entry ], [ %polly.next_loopiv, %polly.loop_body ]
%polly.next_loopiv = add i32 %polly.loopiv16, 4
%p_vector_iv14 = or i32 %polly.loopiv16, 1
%p_vector_iv3 = add i32 %p_vector_iv14, 1
%p_vector_iv415 = or i32 %polly.loopiv16, 3
%p_arrayidx = getelementptr [400 x i8]* @A, i32 0, i32 %polly.loopiv16
%p_arrayidx5 = getelementptr [400 x i8]* @A, i32 0, i32 %p_vector_iv14
%p_arrayidx6 = getelementptr [400 x i8]* @A, i32 0, i32 %p_vector_iv3
%p_arrayidx7 = getelementptr [400 x i8]* @A, i32 0, i32 %p_vector_iv415
store i8 123, i8* %p_arrayidx, align 1
store i8 123, i8* %p_arrayidx5, align 1
store i8 123, i8* %p_arrayidx6, align 1
store i8 123, i8* %p_arrayidx7, align 1
%0 = icmp slt i32 %polly.next_loopiv, 400
br i1 %0, label %polly.loop_body, label %polly.loop_after
}