llvm/test/Transforms/LoopStrengthReduce/exit_compare_live_range.ll
Tanya Lattner e6d5d39c07 Upgrade tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48538 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-19 07:28:33 +00:00

21 lines
744 B
LLVM

; Make sure that the compare instruction occurs after the increment to avoid
; having overlapping live ranges that result in copies. We want the setcc
; instruction immediately before the conditional branch.
;
; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis | \
; RUN: %prcontext {br i1} 1 | grep icmp
define void @foo(float* %D, i32 %E) {
entry:
br label %no_exit
no_exit: ; preds = %no_exit, %entry
%indvar = phi i32 [ 0, %entry ], [ %indvar.next, %no_exit ] ; <i32> [#uses=1]
volatile store float 0.000000e+00, float* %D
%indvar.next = add i32 %indvar, 1 ; <i32> [#uses=2]
%exitcond = icmp eq i32 %indvar.next, %E ; <i1> [#uses=1]
br i1 %exitcond, label %loopexit, label %no_exit
loopexit: ; preds = %no_exit
ret void
}