forked from OSchip/llvm-project
111 lines
2.8 KiB
LLVM
111 lines
2.8 KiB
LLVM
; RUN: llvm-as < %s | opt -disable-output -analyze -lda | FileCheck %s
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@x = common global [256 x i32] zeroinitializer, align 4
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@y = common global [256 x i32] zeroinitializer, align 4
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;; for (i = 0; i < 256; i++)
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;; x[i] = x[i] + y[i]
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define void @f1(...) nounwind {
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
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%y.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
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%x.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
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%x = load i32* %x.addr ; 0
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%y = load i32* %y.addr ; 1
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%r = add i32 %y, %x
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store i32 %r, i32* %x.addr ; 2
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; CHECK: 0,2: dep
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; CHECK: 1,2: ind
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%i.next = add i64 %i, 1
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%exitcond = icmp eq i64 %i.next, 256
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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;; for (i = 0; i < 256; i++)
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;; x[i+1] = x[i] + y[i]
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define void @f2(...) nounwind {
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
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%y.ld.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
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%x.ld.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
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%i.next = add i64 %i, 1
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%x.st.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i.next
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%x = load i32* %x.ld.addr ; 0
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%y = load i32* %y.ld.addr ; 1
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%r = add i32 %y, %x
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store i32 %r, i32* %x.st.addr ; 2
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; CHECK: 0,2: dep
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; CHECK: 1,2: ind
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%exitcond = icmp eq i64 %i.next, 256
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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;; for (i = 0; i < 10; i++)
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;; x[i+20] = x[i] + y[i]
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define void @f3(...) nounwind {
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
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%y.ld.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
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%x.ld.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
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%i.20 = add i64 %i, 20
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%x.st.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i.20
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%x = load i32* %x.ld.addr ; 0
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%y = load i32* %y.ld.addr ; 1
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%r = add i32 %y, %x
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store i32 %r, i32* %x.st.addr ; 2
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; CHECK: 0,2: dep
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; CHECK: 1,2: ind
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%i.next = add i64 %i, 1
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%exitcond = icmp eq i64 %i.next, 10
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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;; for (i = 0; i < 10; i++)
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;; x[10*i+1] = x[10*i] + y[i]
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define void @f4(...) nounwind {
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
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%i.10 = mul i64 %i, 10
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%y.ld.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i.10
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%x.ld.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i.10
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%i.10.1 = add i64 %i.10, 1
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%x.st.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i.10.1
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%x = load i32* %x.ld.addr ; 0
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%y = load i32* %y.ld.addr ; 1
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%r = add i32 %y, %x
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store i32 %r, i32* %x.st.addr ; 2
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; CHECK: 0,2: dep
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; CHECK: 1,2: ind
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%i.next = add i64 %i, 1
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%exitcond = icmp eq i64 %i.next, 10
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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