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llvm-mirror/test/Transforms/IndVarSimplify/pr24952.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

28 lines
559 B
LLVM

; RUN: opt -indvars -S < %s | FileCheck %s
declare void @use(i1)
define void @f() {
; CHECK-LABEL: @f(
entry:
%x = alloca i32
%y = alloca i32
br label %loop
loop:
%iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ]
%iv.inc = add i32 %iv, 1
%x.gep = getelementptr i32, i32* %x, i32 %iv
%eql = icmp eq i32* %x.gep, %y
; CHECK-NOT: @use(i1 true)
call void @use(i1 %eql)
; %be.cond deliberately 'false' -- we want want the trip count to be 0.
%be.cond = icmp ult i32 %iv, 0
br i1 %be.cond, label %loop, label %leave
leave:
ret void
}