llvm/test/Transforms/SimplifyCFG/speculate-with-offset.ll
Stephen Lin 39f4e8d9cc 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186268 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-14 01:42:54 +00:00

95 lines
2.6 KiB
LLVM

; RUN: opt -simplifycfg -S < %s | FileCheck %s
; This load is safe to speculate, as it's from a safe offset
; within an alloca.
; CHECK-LABEL: @yes(
; CHECK-NOT: br
define void @yes(i1 %c) nounwind {
entry:
%a = alloca [4 x i64*], align 8
%__a.addr = getelementptr [4 x i64*]* %a, i64 0, i64 3
call void @frob(i64** %__a.addr)
br i1 %c, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp5 = load i64** %__a.addr, align 8
br label %return
return: ; preds = %if.end, %if.then
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
ret void
}
; CHECK-LABEL: @no0(
; CHECK: br i1 %c
define void @no0(i1 %c) nounwind {
entry:
%a = alloca [4 x i64*], align 8
%__a.addr = getelementptr [4 x i64*]* %a, i64 0, i64 4
call void @frob(i64** %__a.addr)
br i1 %c, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp5 = load i64** %__a.addr, align 8
br label %return
return: ; preds = %if.end, %if.then
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
ret void
}
; CHECK-LABEL: @no1(
; CHECK: br i1 %c
define void @no1(i1 %c, i64 %n) nounwind {
entry:
%a = alloca [4 x i64*], align 8
%__a.addr = getelementptr [4 x i64*]* %a, i64 0, i64 %n
call void @frob(i64** %__a.addr)
br i1 %c, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp5 = load i64** %__a.addr, align 8
br label %return
return: ; preds = %if.end, %if.then
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
ret void
}
; CHECK-LABEL: @no2(
; CHECK: br i1 %c
define void @no2(i1 %c, i64 %n) nounwind {
entry:
%a = alloca [4 x i64*], align 8
%__a.addr = getelementptr [4 x i64*]* %a, i64 1, i64 0
call void @frob(i64** %__a.addr)
br i1 %c, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp5 = load i64** %__a.addr, align 8
br label %return
return: ; preds = %if.end, %if.then
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
ret void
}
declare void @frob(i64** nocapture %p)