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llvm-mirror/test/Transforms/LoopIdiom/int_sideeffect.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

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543 B
LLVM

; RUN: opt -S < %s -loop-idiom | FileCheck %s
declare void @llvm.sideeffect()
; Loop idiom recognition across a @llvm.sideeffect.
; CHECK-LABEL: zero
; CHECK: llvm.memset
define void @zero(float* %p, i64 %n) nounwind {
bb7.lr.ph:
br label %bb7
bb7:
%i.02 = phi i64 [ 0, %bb7.lr.ph ], [ %tmp13, %bb7 ]
%tmp10 = getelementptr inbounds float, float* %p, i64 %i.02
store float 0.000000e+00, float* %tmp10, align 4
%tmp13 = add i64 %i.02, 1
%tmp6 = icmp ult i64 %tmp13, %n
br i1 %tmp6, label %bb7, label %bb14
bb14:
ret void
}