8ebb3eac02
The legacy PM is deprecated, so update a bunch of lit tests running opt to use the new PM syntax when specifying the pipeline. In this patch focus has been put on test cases for ConstantMerge, ConstraintElimination, CorrelatedValuePropagation, GlobalDCE, GlobalOpt, SCCP, TailCallElim and PredicateInfo. Differential Revision: https://reviews.llvm.org/D114516
27 lines
818 B
LLVM
27 lines
818 B
LLVM
; REQUIRES: asserts
|
|
; Duplicate the return into if.end to enable TCE.
|
|
; RUN: opt -passes=tailcallelim -verify-dom-info -stats -disable-output < %s 2>&1 | FileCheck %s
|
|
|
|
; CHECK: Number of return duplicated
|
|
|
|
define i32 @fib(i32 %n) nounwind ssp {
|
|
entry:
|
|
%cmp = icmp slt i32 %n, 2
|
|
br i1 %cmp, label %if.then, label %if.end
|
|
|
|
if.then: ; preds = %entry
|
|
br label %return
|
|
|
|
if.end: ; preds = %entry
|
|
%sub = add nsw i32 %n, -2
|
|
%call = call i32 @fib(i32 %sub)
|
|
%sub3 = add nsw i32 %n, -1
|
|
%call4 = call i32 @fib(i32 %sub3)
|
|
%add = add nsw i32 %call, %call4
|
|
br label %return
|
|
|
|
return: ; preds = %if.end, %if.then
|
|
%retval.0 = phi i32 [ 1, %if.then ], [ %add, %if.end ]
|
|
ret i32 %retval.0
|
|
}
|