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llvm-mirror/test/Transforms/LoopUnroll/basic.ll
Stephen Lin cf082ae903 Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.
This update was done with the following bash script:

  find test/Transforms -name "*.ll" | \
  while read NAME; do
    echo "$NAME"
    if ! grep -q "^; *RUN: *llc" $NAME; then
      TEMP=`mktemp -t temp`
      cp $NAME $TEMP
      sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \
      while read FUNC; do
        sed -i '' "s/;\(.*\)\([A-Za-z0-9_]*\):\( *\)@$FUNC\([( ]*\)\$/;\1\2-LABEL:\3@$FUNC(/g" $TEMP
      done
      mv $TEMP $NAME
    fi
  done

llvm-svn: 186268
2013-07-14 01:42:54 +00:00

48 lines
1.2 KiB
LLVM

; RUN: opt < %s -loop-unroll -S | FileCheck %s
; This should not unroll since the address of the loop header is taken.
; CHECK-LABEL: @test1(
; CHECK: store i8* blockaddress(@test1, %l1), i8** %P
; CHECK: l1:
; CHECK-NEXT: phi i32
; rdar://8287027
define i32 @test1(i8** %P) nounwind ssp {
entry:
store i8* blockaddress(@test1, %l1), i8** %P
br label %l1
l1: ; preds = %l1, %entry
%x.0 = phi i32 [ 0, %entry ], [ %inc, %l1 ]
%inc = add nsw i32 %x.0, 1
%exitcond = icmp eq i32 %inc, 3
br i1 %exitcond, label %l2, label %l1
l2: ; preds = %l1
ret i32 0
}
; This should not unroll since the call is 'noduplicate'.
; CHECK-LABEL: @test2(
define i32 @test2(i8** %P) nounwind ssp {
entry:
br label %l1
l1: ; preds = %l1, %entry
%x.0 = phi i32 [ 0, %entry ], [ %inc, %l1 ]
; CHECK: call void @f()
; CHECK-NOT: call void @f()
call void @f() noduplicate
%inc = add nsw i32 %x.0, 1
%exitcond = icmp eq i32 %inc, 3
br i1 %exitcond, label %l2, label %l1
l2: ; preds = %l1
ret i32 0
; CHECK: }
}
declare void @f()