mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-30 23:42:52 +01:00
2c180f66a9
Don't vectorize with a runtime check if it requires a comparison between pointers with different address spaces. The values can't be assumed to be directly comparable. Previously it would create an illegal bitcast. llvm-svn: 191862
236 lines
8.1 KiB
LLVM
236 lines
8.1 KiB
LLVM
; RUN: opt -S -march=r600 -mcpu=cayman -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine < %s | FileCheck %s
|
|
|
|
; Check vectorization that would ordinarily require a runtime bounds
|
|
; check on the pointers when mixing address spaces. For now we cannot
|
|
; assume address spaces do not alias, and we can't assume that
|
|
; different pointers are directly comparable.
|
|
;
|
|
; These all test this basic loop for different combinations of address
|
|
; spaces, and swapping in globals or adding noalias.
|
|
;
|
|
;void foo(int addrspace(N)* [noalias] a, int addrspace(M)* [noalias] b, int n)
|
|
;{
|
|
; for (int i = 0; i < n; ++i)
|
|
; {
|
|
; a[i] = 3 * b[i];
|
|
; }
|
|
;}
|
|
|
|
; Artificial datalayout
|
|
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"
|
|
|
|
|
|
@g_as1 = common addrspace(1) global [1024 x i32] zeroinitializer, align 16
|
|
@q_as2 = common addrspace(2) global [1024 x i32] zeroinitializer, align 16
|
|
|
|
; Both parameters are unidentified objects with the same address
|
|
; space, so this should vectorize normally.
|
|
define void @foo(i32 addrspace(1)* %a, i32 addrspace(1)* %b, i32 %n) #0 {
|
|
; CHECK-LABEL: @foo(
|
|
; CHECK: <4 x i32>
|
|
; CHECK: ret
|
|
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.body, %entry
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i.0, %n
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %for.cond
|
|
%idxprom = sext i32 %i.0 to i64
|
|
%arrayidx = getelementptr inbounds i32 addrspace(1)* %b, i64 %idxprom
|
|
%0 = load i32 addrspace(1)* %arrayidx, align 4
|
|
%mul = mul nsw i32 %0, 3
|
|
%idxprom1 = sext i32 %i.0 to i64
|
|
%arrayidx2 = getelementptr inbounds i32 addrspace(1)* %a, i64 %idxprom1
|
|
store i32 %mul, i32 addrspace(1)* %arrayidx2, align 4
|
|
%inc = add nsw i32 %i.0, 1
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
ret void
|
|
}
|
|
|
|
; Parameters are unidentified and different address spaces, so cannot vectorize.
|
|
define void @bar0(i32* %a, i32 addrspace(1)* %b, i32 %n) #0 {
|
|
; CHECK-LABEL: @bar0(
|
|
; CHECK-NOT: <4 x i32>
|
|
; CHECK: ret
|
|
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.body, %entry
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i.0, %n
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %for.cond
|
|
%idxprom = sext i32 %i.0 to i64
|
|
%arrayidx = getelementptr inbounds i32 addrspace(1)* %b, i64 %idxprom
|
|
%0 = load i32 addrspace(1)* %arrayidx, align 4
|
|
%mul = mul nsw i32 %0, 3
|
|
%idxprom1 = sext i32 %i.0 to i64
|
|
%arrayidx2 = getelementptr inbounds i32* %a, i64 %idxprom1
|
|
store i32 %mul, i32* %arrayidx2, align 4
|
|
%inc = add nsw i32 %i.0, 1
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
ret void
|
|
}
|
|
|
|
; Swapped arguments should be the same
|
|
define void @bar1(i32 addrspace(1)* %a, i32* %b, i32 %n) #0 {
|
|
; CHECK-LABEL: @bar1(
|
|
; CHECK-NOT: <4 x i32>
|
|
; CHECK: ret
|
|
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.body, %entry
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i.0, %n
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %for.cond
|
|
%idxprom = sext i32 %i.0 to i64
|
|
%arrayidx = getelementptr inbounds i32* %b, i64 %idxprom
|
|
%0 = load i32* %arrayidx, align 4
|
|
%mul = mul nsw i32 %0, 3
|
|
%idxprom1 = sext i32 %i.0 to i64
|
|
%arrayidx2 = getelementptr inbounds i32 addrspace(1)* %a, i64 %idxprom1
|
|
store i32 %mul, i32 addrspace(1)* %arrayidx2, align 4
|
|
%inc = add nsw i32 %i.0, 1
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
ret void
|
|
}
|
|
|
|
; We should still be able to vectorize with noalias even if the
|
|
; address spaces are different.
|
|
define void @bar2(i32* noalias %a, i32 addrspace(1)* noalias %b, i32 %n) #0 {
|
|
; CHECK-LABEL: @bar2(
|
|
; CHECK: <4 x i32>
|
|
; CHECK: ret
|
|
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.body, %entry
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i.0, %n
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %for.cond
|
|
%idxprom = sext i32 %i.0 to i64
|
|
%arrayidx = getelementptr inbounds i32 addrspace(1)* %b, i64 %idxprom
|
|
%0 = load i32 addrspace(1)* %arrayidx, align 4
|
|
%mul = mul nsw i32 %0, 3
|
|
%idxprom1 = sext i32 %i.0 to i64
|
|
%arrayidx2 = getelementptr inbounds i32* %a, i64 %idxprom1
|
|
store i32 %mul, i32* %arrayidx2, align 4
|
|
%inc = add nsw i32 %i.0, 1
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
ret void
|
|
}
|
|
|
|
; Store to identified global with different address space. This isn't
|
|
; generally safe and shouldn't be vectorized.
|
|
define void @arst0(i32* %b, i32 %n) #0 {
|
|
; CHECK-LABEL: @arst0(
|
|
; CHECK-NOT: <4 x i32>
|
|
; CHECK: ret
|
|
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.body, %entry
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i.0, %n
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %for.cond
|
|
%idxprom = sext i32 %i.0 to i64
|
|
%arrayidx = getelementptr inbounds i32* %b, i64 %idxprom
|
|
%0 = load i32* %arrayidx, align 4
|
|
%mul = mul nsw i32 %0, 3
|
|
%idxprom1 = sext i32 %i.0 to i64
|
|
%arrayidx2 = getelementptr inbounds [1024 x i32] addrspace(1)* @g_as1, i64 0, i64 %idxprom1
|
|
store i32 %mul, i32 addrspace(1)* %arrayidx2, align 4
|
|
%inc = add nsw i32 %i.0, 1
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
ret void
|
|
}
|
|
|
|
|
|
; Load from identified global with different address space.
|
|
; This isn't generally safe and shouldn't be vectorized.
|
|
define void @arst1(i32* %b, i32 %n) #0 {
|
|
; CHECK-LABEL: @arst1(
|
|
; CHECK-NOT: <4 x i32>
|
|
; CHECK: ret
|
|
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.body, %entry
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i.0, %n
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %for.cond
|
|
%idxprom = sext i32 %i.0 to i64
|
|
%arrayidx = getelementptr inbounds [1024 x i32] addrspace(1)* @g_as1, i64 0, i64 %idxprom
|
|
%0 = load i32 addrspace(1)* %arrayidx, align 4
|
|
%mul = mul nsw i32 %0, 3
|
|
%idxprom1 = sext i32 %i.0 to i64
|
|
%arrayidx2 = getelementptr inbounds i32* %b, i64 %idxprom1
|
|
store i32 %mul, i32* %arrayidx2, align 4
|
|
%inc = add nsw i32 %i.0, 1
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
ret void
|
|
}
|
|
|
|
; Read and write to 2 identified globals in different address
|
|
; spaces. This should be vectorized.
|
|
define void @aoeu(i32 %n) #0 {
|
|
; CHECK-LABEL: @aoeu(
|
|
; CHECK: <4 x i32>
|
|
; CHECK: ret
|
|
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.body, %entry
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i.0, %n
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %for.cond
|
|
%idxprom = sext i32 %i.0 to i64
|
|
%arrayidx = getelementptr inbounds [1024 x i32] addrspace(2)* @q_as2, i64 0, i64 %idxprom
|
|
%0 = load i32 addrspace(2)* %arrayidx, align 4
|
|
%mul = mul nsw i32 %0, 3
|
|
%idxprom1 = sext i32 %i.0 to i64
|
|
%arrayidx2 = getelementptr inbounds [1024 x i32] addrspace(1)* @g_as1, i64 0, i64 %idxprom1
|
|
store i32 %mul, i32 addrspace(1)* %arrayidx2, align 4
|
|
%inc = add nsw i32 %i.0, 1
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
ret void
|
|
}
|
|
|
|
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" }
|