39 lines
1.0 KiB
LLVM
39 lines
1.0 KiB
LLVM
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; RUN: opt -S -mtriple=amdgcn-amd- -amdgpu-annotate-kernel-features %s | FileCheck %s
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; Test to ensure recursive functions exhibit proper behaviour
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; Test to generate fibonacci numbers
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; CHECK: define i32 @fib(i32 %n) #[[FIB:[0-9]+]] {
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define i32 @fib(i32 %n) #0 {
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%cmp1 = icmp eq i32 %n, 0
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br i1 %cmp1, label %exit, label %cont1
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cont1:
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%cmp2 = icmp eq i32 %n, 1
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br i1 %cmp2, label %exit, label %cont2
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cont2:
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%nm1 = sub i32 %n, 1
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%fibm1 = call i32 @fib(i32 %nm1)
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%nm2 = sub i32 %n, 2
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%fibm2 = call i32 @fib(i32 %nm2)
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%retval = add i32 %fibm1, %fibm2
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ret i32 %retval
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exit:
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ret i32 1
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}
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; CHECK: define amdgpu_kernel void @kernel(i32 addrspace(1)* %m) #[[KERNEL:[0-9]+]] {
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define amdgpu_kernel void @kernel(i32 addrspace(1)* %m) #1 {
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%r = call i32 @fib(i32 5)
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store i32 %r, i32 addrspace(1)* %m
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ret void
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}
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attributes #1 = { "uniform-work-group-size"="true" }
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; CHECK: attributes #[[FIB]] = { "uniform-work-group-size"="true" }
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; CHECK: attributes #[[KERNEL]] = { "amdgpu-calls" "uniform-work-group-size"="true" }
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