mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2026-03-10 22:47:18 +00:00
1419ad7b43
------------------------------------------------------------------------ r183035 | arnolds | 2013-05-31 12:53:50 -0700 (Fri, 31 May 2013) | 7 lines LoopVectorize: PHIs with only outside users should prevent vectorization We check that instructions in the loop don't have outside users (except if they are reduction values). Unfortunately, we skipped this check for if-convertable PHIs. Fixes PR16184. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_33@183189 91177308-0d34-0410-b5e6-96231b3b80d8
42 lines
1.1 KiB
LLVM
42 lines
1.1 KiB
LLVM
; RUN: opt -S -loop-vectorize -force-vector-unroll=1 -force-vector-width=2 < %s | FileCheck %s
|
|
|
|
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
|
|
|
|
@f = common global i32 0, align 4
|
|
@.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
|
|
@c = common global i32 0, align 4
|
|
@a = common global i32 0, align 4
|
|
@b = common global i32 0, align 4
|
|
@e = common global i32 0, align 4
|
|
|
|
; We used to vectorize this loop. But it has a value that is used outside of the
|
|
; and is not a recognized reduction variable "tmp17".
|
|
|
|
; CHECK-NOT: <2 x i32>
|
|
|
|
define i32 @main() {
|
|
bb:
|
|
%b.promoted = load i32* @b, align 4
|
|
br label %.lr.ph.i
|
|
|
|
.lr.ph.i:
|
|
%tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
|
|
%tmp2 = icmp sgt i32 %tmp8, 10
|
|
br i1 %tmp2, label %bb16, label %bb10
|
|
|
|
bb10:
|
|
br label %bb16
|
|
|
|
bb16:
|
|
%tmp17 = phi i32 [ 0, %bb10 ], [ 1, %.lr.ph.i ]
|
|
%tmp18 = add nsw i32 %tmp8, 1
|
|
%tmp19 = icmp slt i32 %tmp18, 4
|
|
br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
|
|
|
|
f1.exit.loopexit:
|
|
%.lcssa = phi i32 [ %tmp17, %bb16 ]
|
|
ret i32 %.lcssa
|
|
}
|
|
|
|
|