mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
2eb341c166
Added a separate metadata to indicate when the loop has already been vectorized instead of setting width and count to 1. Patch written by Divya Shanmughan and Aditya Kumar Differential Revision: https://reviews.llvm.org/D36220 llvm-svn: 311281
77 lines
3.2 KiB
LLVM
77 lines
3.2 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -S -simplifycfg | FileCheck %s
|
|
|
|
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
|
|
|
|
;
|
|
; We want to make sure that we are vectorizeing the scalar loop only once
|
|
; even if the pass manager runs the vectorizer multiple times due to inlining.
|
|
|
|
|
|
; This test checks that we add metadata to vectorized loops
|
|
; CHECK-LABEL: @_Z4foo1Pii(
|
|
; CHECK: <4 x i32>
|
|
; CHECK: llvm.loop
|
|
; CHECK: ret
|
|
|
|
; This test comes from the loop:
|
|
;
|
|
;int foo (int *A, int n) {
|
|
; return std::accumulate(A, A + n, 0);
|
|
;}
|
|
define i32 @_Z4foo1Pii(i32* %A, i32 %n) #0 {
|
|
entry:
|
|
%idx.ext = sext i32 %n to i64
|
|
%add.ptr = getelementptr inbounds i32, i32* %A, i64 %idx.ext
|
|
%cmp3.i = icmp eq i32 %n, 0
|
|
br i1 %cmp3.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i
|
|
|
|
for.body.i: ; preds = %entry, %for.body.i
|
|
%__init.addr.05.i = phi i32 [ %add.i, %for.body.i ], [ 0, %entry ]
|
|
%__first.addr.04.i = phi i32* [ %incdec.ptr.i, %for.body.i ], [ %A, %entry ]
|
|
%0 = load i32, i32* %__first.addr.04.i, align 4
|
|
%add.i = add nsw i32 %0, %__init.addr.05.i
|
|
%incdec.ptr.i = getelementptr inbounds i32, i32* %__first.addr.04.i, i64 1
|
|
%cmp.i = icmp eq i32* %incdec.ptr.i, %add.ptr
|
|
br i1 %cmp.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i
|
|
|
|
_ZSt10accumulateIPiiET0_T_S2_S1_.exit: ; preds = %for.body.i, %entry
|
|
%__init.addr.0.lcssa.i = phi i32 [ 0, %entry ], [ %add.i, %for.body.i ]
|
|
ret i32 %__init.addr.0.lcssa.i
|
|
}
|
|
|
|
; This test checks that we don't vectorize loops that are marked with the "width" == 1 metadata.
|
|
; CHECK-LABEL: @_Z4foo2Pii(
|
|
; CHECK-NOT: <4 x i32>
|
|
; CHECK: llvm.loop
|
|
; CHECK: ret
|
|
define i32 @_Z4foo2Pii(i32* %A, i32 %n) #0 {
|
|
entry:
|
|
%idx.ext = sext i32 %n to i64
|
|
%add.ptr = getelementptr inbounds i32, i32* %A, i64 %idx.ext
|
|
%cmp3.i = icmp eq i32 %n, 0
|
|
br i1 %cmp3.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i
|
|
|
|
for.body.i: ; preds = %entry, %for.body.i
|
|
%__init.addr.05.i = phi i32 [ %add.i, %for.body.i ], [ 0, %entry ]
|
|
%__first.addr.04.i = phi i32* [ %incdec.ptr.i, %for.body.i ], [ %A, %entry ]
|
|
%0 = load i32, i32* %__first.addr.04.i, align 4
|
|
%add.i = add nsw i32 %0, %__init.addr.05.i
|
|
%incdec.ptr.i = getelementptr inbounds i32, i32* %__first.addr.04.i, i64 1
|
|
%cmp.i = icmp eq i32* %incdec.ptr.i, %add.ptr
|
|
br i1 %cmp.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i, !llvm.loop !0
|
|
|
|
_ZSt10accumulateIPiiET0_T_S2_S1_.exit: ; preds = %for.body.i, %entry
|
|
%__init.addr.0.lcssa.i = phi i32 [ 0, %entry ], [ %add.i, %for.body.i ]
|
|
ret i32 %__init.addr.0.lcssa.i
|
|
}
|
|
|
|
attributes #0 = { nounwind readonly ssp uwtable "fp-contract-model"="standard" "no-frame-pointer-elim" "no-frame-pointer-elim-non-leaf" "realign-stack" "relocation-model"="pic" "ssp-buffers-size"="8" }
|
|
|
|
; CHECK: !0 = distinct !{!0, !1}
|
|
; CHECK: !1 = !{!"llvm.loop.isvectorized", i32 1}
|
|
; CHECK: !2 = distinct !{!2, !3, !1}
|
|
; CHECK: !3 = !{!"llvm.loop.unroll.runtime.disable"}
|
|
|
|
!0 = !{!0, !1}
|
|
!1 = !{!"llvm.loop.vectorize.width", i32 1}
|