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; RUN: llc < %s -march=r600 -mattr=disable-ifcvt -mcpu=redwood | FileCheck %s
; This tests for abug where the AMDILCFGStructurizer was crashing on loops
; like this:
;
; for (i = 0; i < x; i++) {
; if (cond0) {
; if (cond1) {
;
; } else {
;
; }
; if (cond2) {
;
; }
; }
; }
; CHECK-LABEL: @if_inside_loop
; CHECK: LOOP_START_DX10
; CHECK: END_LOOP
define void @if_inside_loop(i32 addrspace(1)* %out, i32 %a, i32 %b, i32 %c, i32 %d) {
entry:
br label %for.body
for.body:
%0 = phi i32 [0, %entry], [%inc, %for.inc]
%val = phi i32 [0, %entry], [%val.for.inc, %for.inc]
%inc = add i32 %0, 1
%1 = icmp ult i32 10, %a
br i1 %1, label %for.inc, label %if.then
if.then:
%2 = icmp ne i32 0, %b
br i1 %2, label %if.then.true, label %if.then.false
if.then.true:
%3 = add i32 %a, %val
br label %if
if.then.false:
%4 = mul i32 %a, %val
br label %if
if:
%val.if = phi i32 [%3, %if.then.true], [%4, %if.then.false]
%5 = icmp ne i32 0, %c
br i1 %5, label %if.true, label %for.inc
if.true:
%6 = add i32 %a, %val.if
br label %for.inc
for.inc:
%val.for.inc = phi i32 [%val, %for.body], [%val.if, %if], [%6, %if.true]
%7 = icmp ne i32 0, %d
br i1 %7, label %for.body, label %exit
exit:
store i32 %val.for.inc, i32 addrspace(1)* %out
ret void
}
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