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https://github.com/c64scene-ar/llvm-6502.git
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51 lines
1.5 KiB
LLVM
51 lines
1.5 KiB
LLVM
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; RUN: opt -S -structurizecfg %s -o - | FileCheck %s
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;
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; void loop(int *out, int cond_a, int cond_b) {
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;
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; unsigned i;
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; for (i = 0; i < cond_a; i++) {
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; out[i] = i;
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; if (i > cond_b) {
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; break;
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; }
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; out[i + cond_a] = i;
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; }
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; }
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define void @loop(i32 addrspace(1)* %out, i32 %cond_a, i32 %cond_b) nounwind uwtable {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
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%cmp = icmp ult i32 %i.0, %cond_a
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br i1 %cmp, label %for.body, label %for.end
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; CHECK: for.body:
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for.body: ; preds = %for.cond
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%arrayidx = getelementptr inbounds i32 addrspace(1)* %out, i32 %i.0
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store i32 %i.0, i32 addrspace(1)* %arrayidx, align 4
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%cmp1 = icmp ugt i32 %i.0, %cond_b
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; CHECK: br i1 %{{[0-9a-zA-Z_]+}}, label %for.inc, label %[[FLOW1:[0-9a-zA-Z_]+]]
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br i1 %cmp1, label %for.end, label %for.inc
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; CHECK: [[FLOW:[0-9a-zA-Z]+]]:
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; CHECK: br i1 %{{[0-9a-zA-Z_]+}}, label %for.end, label %for.cond
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; CHECK: for.inc:
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; CHECK: br label %[[FLOW1]]
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for.inc: ; preds = %for.body
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%0 = add i32 %cond_a, %i.0
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%arrayidx3 = getelementptr inbounds i32 addrspace(1)* %out, i32 %0
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store i32 %i.0, i32 addrspace(1)* %arrayidx3, align 4
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%inc = add i32 %i.0, 1
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br label %for.cond
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; CHECK: [[FLOW1]]
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; CHECK: br label %[[FLOW]]
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for.end: ; preds = %for.cond, %for.body
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ret void
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}
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