51 lines
1.8 KiB
LLVM
51 lines
1.8 KiB
LLVM
; RUN: opt -S -basicaa -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine < %s | 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"
|
|
target triple = "x86_64-apple-macosx10.8.0"
|
|
|
|
@uf = common global [100 x i32] zeroinitializer, align 16
|
|
@xi = common global [100 x i32] zeroinitializer, align 16
|
|
@q = common global [100 x i32] zeroinitializer, align 16
|
|
|
|
; PR16455
|
|
|
|
|
|
; Due to a bug in the way we handled reverse induction stores we would generate
|
|
; a shuffle too many.
|
|
|
|
define void @t() {
|
|
entry:
|
|
br label %for.body
|
|
|
|
; CHECK-LABEL: @t(
|
|
; CHECK: vector.body:
|
|
; CHECK: [[VAR1:%[a-zA-Z0-9.]+]] = load <4 x i32>
|
|
; CHECK: [[VAR2:%[a-zA-Z0-9.]+]] = load <4 x i32>
|
|
; CHECK: [[VAR3:%[a-zA-Z0-9]+]] = add nsw <4 x i32> [[VAR2]], [[VAR1]]
|
|
; CHECK: store <4 x i32> [[VAR3]]
|
|
; CHECK: [[VAR4:%[a-zA-Z0-9.]+]] = load <4 x i32>
|
|
; CHECK: add nsw <4 x i32> [[VAR3]], [[VAR4]]
|
|
; CHECK-NOT: shufflevector
|
|
|
|
for.body:
|
|
%indvars.iv = phi i64 [ 93, %entry ], [ %indvars.iv.next, %for.body ]
|
|
%0 = add i64 %indvars.iv, 1
|
|
%arrayidx = getelementptr inbounds [100 x i32], [100 x i32]* @uf, i64 0, i64 %0
|
|
%arrayidx3 = getelementptr inbounds [100 x i32], [100 x i32]* @xi, i64 0, i64 %0
|
|
%1 = load i32, i32* %arrayidx3, align 4
|
|
%2 = load i32, i32* %arrayidx, align 4
|
|
%add4 = add nsw i32 %2, %1
|
|
store i32 %add4, i32* %arrayidx, align 4
|
|
%arrayidx7 = getelementptr inbounds [100 x i32], [100 x i32]* @q, i64 0, i64 %0
|
|
%3 = load i32, i32* %arrayidx7, align 4
|
|
%add8 = add nsw i32 %add4, %3
|
|
store i32 %add8, i32* %arrayidx, align 4
|
|
%indvars.iv.next = add i64 %indvars.iv, -1
|
|
%4 = trunc i64 %indvars.iv.next to i32
|
|
%cmp = icmp ugt i32 %4, 2
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
|
|
for.end:
|
|
ret void
|
|
}
|