48 lines
1.2 KiB
LLVM
48 lines
1.2 KiB
LLVM
; RUN: opt -S -o - -structurizecfg < %s | FileCheck %s
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; CHECK-LABEL: @invert_branch_on_arg_inf_loop(
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; CHECK: entry:
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; CHECK: %arg.inv = xor i1 %arg, true
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; CHECK: phi i1 [ false, %Flow1 ], [ %arg.inv, %entry ]
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define void @invert_branch_on_arg_inf_loop(i32 addrspace(1)* %out, i1 %arg) {
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entry:
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br i1 %arg, label %for.end, label %for.body
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for.body: ; preds = %entry, %for.body
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store i32 999, i32 addrspace(1)* %out, align 4
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br label %for.body
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for.end: ; preds = %Flow
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ret void
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}
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; CHECK-LABEL: @invert_branch_on_arg_jump_into_loop(
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; CHECK: entry:
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; CHECK: %arg.inv = xor i1 %arg, true
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; CHECK: Flow:
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; CHECK: Flow1:
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define void @invert_branch_on_arg_jump_into_loop(i32 addrspace(1)* %out, i32 %n, i1 %arg) {
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entry:
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br label %for.body
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for.body:
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%i = phi i32 [0, %entry], [%i.inc, %end.loop]
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%ptr = getelementptr i32 addrspace(1)* %out, i32 %i
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store i32 %i, i32 addrspace(1)* %ptr, align 4
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br i1 %arg, label %mid.loop, label %end.loop
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mid.loop:
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store i32 333, i32 addrspace(1)* %out, align 4
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br label %for.end
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end.loop:
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%i.inc = add i32 %i, 1
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%cmp = icmp ne i32 %i.inc, %n
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br i1 %cmp, label %for.body, label %for.end
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for.end:
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ret void
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}
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