45 lines
1.5 KiB
LLVM
45 lines
1.5 KiB
LLVM
; RUN: opt -passes=metarenamer -S < %s | FileCheck %s
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define void @opcodes(ptr %p, ptr %arr) {
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; CHECK-LABEL: bb:
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; CHECK: %load = load i32, ptr %arg, align 4
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; CHECK: br label %bb2
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; CHECK-LABEL: bb2: ; preds = %bb5, %bb
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; CHECK: %phi = phi i32 [ %load, %bb ], [ %sub, %bb5 ]
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; CHECK: %icmp = icmp eq i32 %phi, 0
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; CHECK: br i1 %icmp, label %bb8, label %bb3
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; CHECK-LABEL: bb3: ; preds = %bb2
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; CHECK: %sub = sub i32 %phi, 1
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; CHECK: %icmp4 = icmp ult i32 %sub, %load
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; CHECK: br i1 %icmp4, label %bb5, label %bb9
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; CHECK-LABEL: bb5: ; preds = %bb3
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; CHECK: %getelementptr = getelementptr i32, ptr %arg, i32 %phi
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; CHECK: %load6 = load i32, ptr %getelementptr, align 4
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; CHECK: %icmp7 = icmp eq i32 %load6, 0
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; CHECK: br i1 %icmp7, label %bb2, label %bb8
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preheader:
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%len = load i32, ptr %p
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br label %loop
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loop:
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%iv = phi i32 [%len, %preheader], [%iv.next, %backedge]
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%zero_cond = icmp eq i32 %iv, 0
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br i1 %zero_cond, label %exit, label %range_check_block
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range_check_block:
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%iv.next = sub i32 %iv, 1
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%range_check = icmp ult i32 %iv.next, %len
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br i1 %range_check, label %backedge, label %fail
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backedge:
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%el.ptr = getelementptr i32, ptr %p, i32 %iv
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%el = load i32, ptr %el.ptr
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%loop.cond = icmp eq i32 %el, 0
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br i1 %loop.cond, label %loop, label %exit
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exit:
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ret void
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fail:
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unreachable
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}
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