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llvm-mirror/test/Transforms/StructurizeCFG/no-branch-to-entry.ll
Eric Christopher a62270de2c Revert "Temporarily Revert "Add basic loop fusion pass.""
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
2019-04-17 04:52:47 +00:00

39 lines
1.2 KiB
LLVM

; XFAIL: *
; This test used to generate a region that caused it to delete the entry block,
; but it does not anymore after the changes to handling of infinite loops in the
; PostDominatorTree.
; TODO: This should be either replaced with another IR or deleted completely.
; RUN: opt -S -o - -structurizecfg -verify-dom-info < %s | FileCheck %s
; CHECK-LABEL: @no_branch_to_entry_undef(
; CHECK: entry:
; CHECK-NEXT: br label %entry.orig
define void @no_branch_to_entry_undef(i32 addrspace(1)* %out) {
entry:
br i1 undef, label %for.end, label %for.body
for.body: ; preds = %entry, %for.body
store i32 999, i32 addrspace(1)* %out, align 4
br label %for.body
for.end: ; preds = %Flow
ret void
}
; CHECK-LABEL: @no_branch_to_entry_true(
; CHECK: entry:
; CHECK-NEXT: br label %entry.orig
define void @no_branch_to_entry_true(i32 addrspace(1)* %out) {
entry:
br i1 true, label %for.end, label %for.body
for.body: ; preds = %entry, %for.body
store i32 999, i32 addrspace(1)* %out, align 4
br label %for.body
for.end: ; preds = %Flow
ret void
}