72 lines
2.2 KiB
LLVM
72 lines
2.2 KiB
LLVM
; RUN: llc < %s -march=nvptx64 -mcpu=sm_35 | FileCheck %s
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target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
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target triple = "nvptx64-nvidia-cuda"
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; CUDA code
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; __global__ void foo(int b, int s) {
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; #pragma unroll
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; for (int i = 0; i < 4; ++i) {
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; if (cond(i))
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; use((b + i) * s);
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; }
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; }
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define void @foo(i32 %b, i32 %s) {
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; CHECK-LABEL: .visible .entry foo(
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entry:
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; CHECK: ld.param.u32 [[s:%r[0-9]+]], [foo_param_1];
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; CHECK: ld.param.u32 [[b:%r[0-9]+]], [foo_param_0];
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%call = tail call zeroext i1 @cond(i32 0)
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br i1 %call, label %if.then, label %for.inc
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if.then: ; preds = %entry
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%mul = mul nsw i32 %b, %s
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; CHECK: mul.lo.s32 [[a0:%r[0-9]+]], [[b]], [[s]]
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tail call void @use(i32 %mul)
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br label %for.inc
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for.inc: ; preds = %entry, %if.then
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%call.1 = tail call zeroext i1 @cond(i32 1)
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br i1 %call.1, label %if.then.1, label %for.inc.1
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if.then.1: ; preds = %for.inc
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%add.1 = add nsw i32 %b, 1
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%mul.1 = mul nsw i32 %add.1, %s
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; CHECK: add.s32 [[a1:%r[0-9]+]], [[a0]], [[s]]
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tail call void @use(i32 %mul.1)
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br label %for.inc.1
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for.inc.1: ; preds = %if.then.1, %for.inc
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%call.2 = tail call zeroext i1 @cond(i32 2)
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br i1 %call.2, label %if.then.2, label %for.inc.2
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if.then.2: ; preds = %for.inc.1
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%add.2 = add nsw i32 %b, 2
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%mul.2 = mul nsw i32 %add.2, %s
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; CHECK: add.s32 [[a2:%r[0-9]+]], [[a1]], [[s]]
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tail call void @use(i32 %mul.2)
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br label %for.inc.2
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for.inc.2: ; preds = %if.then.2, %for.inc.1
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%call.3 = tail call zeroext i1 @cond(i32 3)
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br i1 %call.3, label %if.then.3, label %for.inc.3
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if.then.3: ; preds = %for.inc.2
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%add.3 = add nsw i32 %b, 3
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%mul.3 = mul nsw i32 %add.3, %s
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; CHECK: add.s32 [[a3:%r[0-9]+]], [[a2]], [[s]]
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tail call void @use(i32 %mul.3)
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br label %for.inc.3
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for.inc.3: ; preds = %if.then.3, %for.inc.2
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ret void
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}
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declare zeroext i1 @cond(i32)
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declare void @use(i32)
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!nvvm.annotations = !{!0}
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!0 = !{void (i32, i32)* @foo, !"kernel", i32 1}
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