llvm-6502/test/Transforms/LoopStrengthReduce/exit_compare_live_range.ll
Dmitri Gribenko b4912b9dcc Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID
This is done to avoid odd test failures, like the one fixed in r171243.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171246 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-30 01:28:40 +00:00

22 lines
728 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: opt -S -loop-reduce < %s | FileCheck %s
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]
store volatile float 0.000000e+00, float* %D
%indvar.next = add i32 %indvar, 1 ; <i32> [#uses=2]
; CHECK: icmp
; CHECK-NEXT: br i1
%exitcond = icmp eq i32 %indvar.next, %E ; <i1> [#uses=1]
br i1 %exitcond, label %loopexit, label %no_exit
loopexit: ; preds = %no_exit
ret void
}