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