1 ; RUN: llc < %s -march=r600 -mattr=disable-ifcvt -mcpu=redwood | FileCheck %s 2 3 ; This tests for abug where the AMDILCFGStructurizer was crashing on loops 4 ; like this: 5 ; 6 ; for (i = 0; i < x; i++) { 7 ; if (cond0) { 8 ; if (cond1) { 9 ; 10 ; } else { 11 ; 12 ; } 13 ; if (cond2) { 14 ; 15 ; } 16 ; } 17 ; } 18 19 ; CHECK-LABEL: @if_inside_loop 20 ; CHECK: LOOP_START_DX10 21 ; CHECK: END_LOOP 22 define void @if_inside_loop(i32 addrspace(1)* %out, i32 %a, i32 %b, i32 %c, i32 %d) { 23 entry: 24 br label %for.body 25 26 for.body: 27 %0 = phi i32 [0, %entry], [%inc, %for.inc] 28 %val = phi i32 [0, %entry], [%val.for.inc, %for.inc] 29 %inc = add i32 %0, 1 30 %1 = icmp ult i32 10, %a 31 br i1 %1, label %for.inc, label %if.then 32 33 if.then: 34 %2 = icmp ne i32 0, %b 35 br i1 %2, label %if.then.true, label %if.then.false 36 37 if.then.true: 38 %3 = add i32 %a, %val 39 br label %if 40 41 if.then.false: 42 %4 = mul i32 %a, %val 43 br label %if 44 45 if: 46 %val.if = phi i32 [%3, %if.then.true], [%4, %if.then.false] 47 %5 = icmp ne i32 0, %c 48 br i1 %5, label %if.true, label %for.inc 49 50 if.true: 51 %6 = add i32 %a, %val.if 52 br label %for.inc 53 54 for.inc: 55 %val.for.inc = phi i32 [%val, %for.body], [%val.if, %if], [%6, %if.true] 56 %7 = icmp ne i32 0, %d 57 br i1 %7, label %for.body, label %exit 58 59 exit: 60 store i32 %val.for.inc, i32 addrspace(1)* %out 61 ret void 62 } 63
