forked from OSchip/llvm-project
222 lines
8.1 KiB
LLVM
222 lines
8.1 KiB
LLVM
; RUN: opt -S -march=r600 -mcpu=cayman -basicaa -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine < %s | FileCheck %s
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; Check vectorization that would ordinarily require a runtime bounds
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; check on the pointers when mixing address spaces. For now we cannot
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; assume address spaces do not alias, and we can't assume that
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; different pointers are directly comparable.
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;
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; These all test this basic loop for different combinations of address
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; spaces, and swapping in globals or adding noalias.
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;
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;void foo(int addrspace(N)* [noalias] a, int addrspace(M)* [noalias] b, int n)
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;{
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; for (int i = 0; i < n; ++i)
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; {
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; a[i] = 3 * b[i];
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; }
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;}
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; Artificial datalayout
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target datalayout = "e-p:32:32:32-p1:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-v16:16:16-v24:32:32-v32:32:32-v48:64:64-v64:64:64-v96:128:128-v128:128:128-v192:256:256-v256:256:256-v512:512:512-v1024:1024:1024-v2048:2048:2048-n32:64"
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@g_as1 = common addrspace(1) global [1024 x i32] zeroinitializer, align 16
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@q_as2 = common addrspace(2) global [1024 x i32] zeroinitializer, align 16
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; Both parameters are unidentified objects with the same address
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; space, so this should vectorize normally.
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define void @foo(i32 addrspace(1)* %a, i32 addrspace(1)* %b, i32 %n) #0 {
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; CHECK-LABEL: @foo(
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; CHECK: <4 x i32>
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; CHECK: ret
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entry:
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%cmp1 = icmp slt i32 0, %n
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br i1 %cmp1, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%i.02 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
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%idxprom = sext i32 %i.02 to i64
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%arrayidx = getelementptr inbounds i32, i32 addrspace(1)* %b, i64 %idxprom
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%0 = load i32, i32 addrspace(1)* %arrayidx, align 4
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%mul = mul nsw i32 %0, 3
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%idxprom1 = sext i32 %i.02 to i64
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%arrayidx2 = getelementptr inbounds i32, i32 addrspace(1)* %a, i64 %idxprom1
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store i32 %mul, i32 addrspace(1)* %arrayidx2, align 4
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%inc = add nsw i32 %i.02, 1
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%cmp = icmp slt i32 %inc, %n
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body, %entry
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ret void
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}
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; Parameters are unidentified and different address spaces, so cannot vectorize.
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define void @bar0(i32* %a, i32 addrspace(1)* %b, i32 %n) #0 {
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; CHECK-LABEL: @bar0(
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; CHECK-NOT: <4 x i32>
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; CHECK: ret
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entry:
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%cmp1 = icmp slt i32 0, %n
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br i1 %cmp1, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%i.02 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
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%idxprom = sext i32 %i.02 to i64
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%arrayidx = getelementptr inbounds i32, i32 addrspace(1)* %b, i64 %idxprom
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%0 = load i32, i32 addrspace(1)* %arrayidx, align 4
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%mul = mul nsw i32 %0, 3
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%idxprom1 = sext i32 %i.02 to i64
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%arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %idxprom1
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store i32 %mul, i32* %arrayidx2, align 4
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%inc = add nsw i32 %i.02, 1
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%cmp = icmp slt i32 %inc, %n
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body, %entry
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ret void
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}
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; Swapped arguments should be the same
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define void @bar1(i32 addrspace(1)* %a, i32* %b, i32 %n) #0 {
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; CHECK-LABEL: @bar1(
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; CHECK-NOT: <4 x i32>
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; CHECK: ret
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entry:
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%cmp1 = icmp slt i32 0, %n
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br i1 %cmp1, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%i.02 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
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%idxprom = sext i32 %i.02 to i64
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%arrayidx = getelementptr inbounds i32, i32* %b, i64 %idxprom
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%0 = load i32, i32* %arrayidx, align 4
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%mul = mul nsw i32 %0, 3
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%idxprom1 = sext i32 %i.02 to i64
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%arrayidx2 = getelementptr inbounds i32, i32 addrspace(1)* %a, i64 %idxprom1
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store i32 %mul, i32 addrspace(1)* %arrayidx2, align 4
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%inc = add nsw i32 %i.02, 1
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%cmp = icmp slt i32 %inc, %n
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body, %entry
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ret void
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}
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; We should still be able to vectorize with noalias even if the
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; address spaces are different.
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define void @bar2(i32* noalias %a, i32 addrspace(1)* noalias %b, i32 %n) #0 {
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; CHECK-LABEL: @bar2(
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; CHECK: <4 x i32>
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; CHECK: ret
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entry:
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%cmp1 = icmp slt i32 0, %n
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br i1 %cmp1, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%i.02 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
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%idxprom = sext i32 %i.02 to i64
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%arrayidx = getelementptr inbounds i32, i32 addrspace(1)* %b, i64 %idxprom
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%0 = load i32, i32 addrspace(1)* %arrayidx, align 4
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%mul = mul nsw i32 %0, 3
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%idxprom1 = sext i32 %i.02 to i64
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%arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %idxprom1
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store i32 %mul, i32* %arrayidx2, align 4
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%inc = add nsw i32 %i.02, 1
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%cmp = icmp slt i32 %inc, %n
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body, %entry
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ret void
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}
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; Store to identified global with different address space. This isn't
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; generally safe and shouldn't be vectorized.
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define void @arst0(i32* %b, i32 %n) #0 {
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; CHECK-LABEL: @arst0(
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; CHECK-NOT: <4 x i32>
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; CHECK: ret
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entry:
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%cmp1 = icmp slt i32 0, %n
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br i1 %cmp1, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%i.02 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
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%idxprom = sext i32 %i.02 to i64
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%arrayidx = getelementptr inbounds i32, i32* %b, i64 %idxprom
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%0 = load i32, i32* %arrayidx, align 4
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%mul = mul nsw i32 %0, 3
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%idxprom1 = sext i32 %i.02 to i64
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%arrayidx2 = getelementptr inbounds [1024 x i32], [1024 x i32] addrspace(1)* @g_as1, i64 0, i64 %idxprom1
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store i32 %mul, i32 addrspace(1)* %arrayidx2, align 4
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%inc = add nsw i32 %i.02, 1
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%cmp = icmp slt i32 %inc, %n
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body, %entry
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ret void
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}
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; Load from identified global with different address space.
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; This isn't generally safe and shouldn't be vectorized.
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define void @arst1(i32* %b, i32 %n) #0 {
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; CHECK-LABEL: @arst1(
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; CHECK-NOT: <4 x i32>
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; CHECK: ret
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entry:
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%cmp1 = icmp slt i32 0, %n
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br i1 %cmp1, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%i.02 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
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%idxprom = sext i32 %i.02 to i64
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%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32] addrspace(1)* @g_as1, i64 0, i64 %idxprom
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%0 = load i32, i32 addrspace(1)* %arrayidx, align 4
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%mul = mul nsw i32 %0, 3
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%idxprom1 = sext i32 %i.02 to i64
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%arrayidx2 = getelementptr inbounds i32, i32* %b, i64 %idxprom1
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store i32 %mul, i32* %arrayidx2, align 4
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%inc = add nsw i32 %i.02, 1
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%cmp = icmp slt i32 %inc, %n
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body, %entry
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ret void
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}
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; Read and write to 2 identified globals in different address
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; spaces. This should be vectorized.
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define void @aoeu(i32 %n) #0 {
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; CHECK-LABEL: @aoeu(
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; CHECK: <4 x i32>
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; CHECK: ret
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entry:
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%cmp1 = icmp slt i32 0, %n
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br i1 %cmp1, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%i.02 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
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%idxprom = sext i32 %i.02 to i64
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%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32] addrspace(2)* @q_as2, i64 0, i64 %idxprom
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%0 = load i32, i32 addrspace(2)* %arrayidx, align 4
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%mul = mul nsw i32 %0, 3
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%idxprom1 = sext i32 %i.02 to i64
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%arrayidx2 = getelementptr inbounds [1024 x i32], [1024 x i32] addrspace(1)* @g_as1, i64 0, i64 %idxprom1
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store i32 %mul, i32 addrspace(1)* %arrayidx2, align 4
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%inc = add nsw i32 %i.02, 1
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%cmp = icmp slt i32 %inc, %n
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body, %entry
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ret void
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}
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attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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