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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-globals
; RUN: opt -S -mtriple=amdgcn-amd- -amdgpu-attributor %s | FileCheck %s
; Test to ensure recursive functions exhibit proper behaviour
; Test to generate fibonacci numbers
define i32 @fib(i32 %n) #0 {
; CHECK-LABEL: define {{[^@]+}}@fib
; CHECK-SAME: (i32 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[N]], 0
; CHECK-NEXT: br i1 [[CMP1]], label [[EXIT:%.*]], label [[CONT1:%.*]]
; CHECK: cont1:
; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i32 [[N]], 1
; CHECK-NEXT: br i1 [[CMP2]], label [[EXIT]], label [[CONT2:%.*]]
; CHECK: cont2:
; CHECK-NEXT: [[NM1:%.*]] = sub i32 [[N]], 1
; CHECK-NEXT: [[FIBM1:%.*]] = call i32 @fib(i32 [[NM1]])
; CHECK-NEXT: [[NM2:%.*]] = sub i32 [[N]], 2
; CHECK-NEXT: [[FIBM2:%.*]] = call i32 @fib(i32 [[NM2]])
; CHECK-NEXT: [[RETVAL:%.*]] = add i32 [[FIBM1]], [[FIBM2]]
; CHECK-NEXT: ret i32 [[RETVAL]]
; CHECK: exit:
; CHECK-NEXT: ret i32 1
;
%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
}
define internal i32 @fib_internal(i32 %n) #0 {
; CHECK-LABEL: define {{[^@]+}}@fib_internal
; CHECK-SAME: (i32 [[N:%.*]]) #[[ATTR1:[0-9]+]] {
; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[N]], 0
; CHECK-NEXT: br i1 [[CMP1]], label [[EXIT:%.*]], label [[CONT1:%.*]]
; CHECK: cont1:
; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i32 [[N]], 1
; CHECK-NEXT: br i1 [[CMP2]], label [[EXIT]], label [[CONT2:%.*]]
; CHECK: cont2:
; CHECK-NEXT: [[NM1:%.*]] = sub i32 [[N]], 1
; CHECK-NEXT: [[FIBM1:%.*]] = call i32 @fib_internal(i32 [[NM1]])
; CHECK-NEXT: [[NM2:%.*]] = sub i32 [[N]], 2
; CHECK-NEXT: [[FIBM2:%.*]] = call i32 @fib_internal(i32 [[NM2]])
; CHECK-NEXT: [[RETVAL:%.*]] = add i32 [[FIBM1]], [[FIBM2]]
; CHECK-NEXT: ret i32 [[RETVAL]]
; CHECK: exit:
; CHECK-NEXT: ret i32 1
;
%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_internal(i32 %nm1)
%nm2 = sub i32 %n, 2
%fibm2 = call i32 @fib_internal(i32 %nm2)
%retval = add i32 %fibm1, %fibm2
ret i32 %retval
exit:
ret i32 1
}
define amdgpu_kernel void @kernel(i32 addrspace(1)* %m) #1 {
; CHECK-LABEL: define {{[^@]+}}@kernel
; CHECK-SAME: (i32 addrspace(1)* [[M:%.*]]) #[[ATTR2:[0-9]+]] {
; CHECK-NEXT: [[R:%.*]] = call i32 @fib(i32 5)
; CHECK-NEXT: [[R2:%.*]] = call i32 @fib_internal(i32 5)
; CHECK-NEXT: store i32 [[R]], i32 addrspace(1)* [[M]], align 4
; CHECK-NEXT: store i32 [[R2]], i32 addrspace(1)* [[M]], align 4
; CHECK-NEXT: ret void
;
%r = call i32 @fib(i32 5)
%r2 = call i32 @fib_internal(i32 5)
store i32 %r, i32 addrspace(1)* %m
store i32 %r2, i32 addrspace(1)* %m
ret void
}
; nounwind and readnone are added to match attributor results.
attributes #0 = { nounwind readnone }
attributes #1 = { "uniform-work-group-size"="true" }
;.
; CHECK: attributes #[[ATTR0]] = { nounwind readnone "amdgpu-no-dispatch-id" "amdgpu-no-dispatch-ptr" "amdgpu-no-hostcall-ptr" "amdgpu-no-implicitarg-ptr" "amdgpu-no-queue-ptr" "amdgpu-no-workgroup-id-x" "amdgpu-no-workgroup-id-y" "amdgpu-no-workgroup-id-z" "amdgpu-no-workitem-id-x" "amdgpu-no-workitem-id-y" "amdgpu-no-workitem-id-z" "uniform-work-group-size"="false" }
; CHECK: attributes #[[ATTR1]] = { nounwind readnone "amdgpu-no-dispatch-id" "amdgpu-no-dispatch-ptr" "amdgpu-no-hostcall-ptr" "amdgpu-no-implicitarg-ptr" "amdgpu-no-queue-ptr" "amdgpu-no-workgroup-id-x" "amdgpu-no-workgroup-id-y" "amdgpu-no-workgroup-id-z" "amdgpu-no-workitem-id-x" "amdgpu-no-workitem-id-y" "amdgpu-no-workitem-id-z" "uniform-work-group-size"="true" }
; CHECK: attributes #[[ATTR2]] = { "amdgpu-no-dispatch-id" "amdgpu-no-dispatch-ptr" "amdgpu-no-hostcall-ptr" "amdgpu-no-implicitarg-ptr" "amdgpu-no-queue-ptr" "amdgpu-no-workgroup-id-x" "amdgpu-no-workgroup-id-y" "amdgpu-no-workgroup-id-z" "amdgpu-no-workitem-id-x" "amdgpu-no-workitem-id-y" "amdgpu-no-workitem-id-z" "uniform-work-group-size"="true" }
;.
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