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https://github.com/c64scene-ar/llvm-6502.git
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63 lines
1.3 KiB
LLVM
63 lines
1.3 KiB
LLVM
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; RUN: llc < %s -march=r600 -mattr=disable-ifcvt -mcpu=redwood | FileCheck %s
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; This tests for abug where the AMDILCFGStructurizer was crashing on loops
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; like this:
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;
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; for (i = 0; i < x; i++) {
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; if (cond0) {
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; if (cond1) {
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;
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; } else {
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;
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; }
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; if (cond2) {
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;
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; }
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; }
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; }
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; CHECK-LABEL: @if_inside_loop
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; CHECK: LOOP_START_DX10
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; CHECK: END_LOOP
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define void @if_inside_loop(i32 addrspace(1)* %out, i32 %a, i32 %b, i32 %c, i32 %d) {
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entry:
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br label %for.body
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for.body:
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%0 = phi i32 [0, %entry], [%inc, %for.inc]
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%val = phi i32 [0, %entry], [%val.for.inc, %for.inc]
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%inc = add i32 %0, 1
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%1 = icmp ult i32 10, %a
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br i1 %1, label %for.inc, label %if.then
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if.then:
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%2 = icmp ne i32 0, %b
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br i1 %2, label %if.then.true, label %if.then.false
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if.then.true:
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%3 = add i32 %a, %val
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br label %if
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if.then.false:
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%4 = mul i32 %a, %val
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br label %if
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if:
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%val.if = phi i32 [%3, %if.then.true], [%4, %if.then.false]
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%5 = icmp ne i32 0, %c
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br i1 %5, label %if.true, label %for.inc
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if.true:
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%6 = add i32 %a, %val.if
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br label %for.inc
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for.inc:
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%val.for.inc = phi i32 [%val, %for.body], [%val.if, %if], [%6, %if.true]
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%7 = icmp ne i32 0, %d
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br i1 %7, label %for.body, label %exit
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exit:
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store i32 %val.for.inc, i32 addrspace(1)* %out
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ret void
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}
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