29 lines
909 B
LLVM
29 lines
909 B
LLVM
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; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -mcpu=fiji -loop-vectorize < %s | FileCheck %s
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; For AMDGPU, loop unroll in loop vectorizer is disabled when VF==1.
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;
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; CHECK-LABEL: @small_loop(
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; CHECK: store i32
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; CHECK-NOT: store i32
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; CHECK: ret
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define amdgpu_kernel void @small_loop(i32* nocapture %inArray, i32 %size) nounwind {
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entry:
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%0 = icmp sgt i32 %size, 0
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br i1 %0, label %loop, label %exit
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loop: ; preds = %entry, %loop
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%iv = phi i32 [ %iv1, %loop ], [ 0, %entry ]
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%1 = getelementptr inbounds i32, i32* %inArray, i32 %iv
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%2 = load i32, i32* %1, align 4
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%3 = add nsw i32 %2, 6
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store i32 %3, i32* %1, align 4
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%iv1 = add i32 %iv, 1
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; %lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%cond = icmp eq i32 %iv1, %size
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br i1 %cond, label %exit, label %loop
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exit: ; preds = %loop, %entry
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ret void
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}
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