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llvm-project/llvm/test/Transforms/LoopUnroll/basic.ll

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add a testcase for r125827 llvm-svn: 125831
2011-02-18 13:05:01 +08:00
; RUN: opt < %s -loop-unroll -S | FileCheck %s
; This should not unroll since the address of the loop header is taken.
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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test1(
add a testcase for r125827 llvm-svn: 125831
2011-02-18 13:05:01 +08:00
; CHECK: store i8* blockaddress(@test1, %l1), i8** %P
; CHECK: l1:
; CHECK-NEXT: phi i32
; rdar://8287027
define i32 @test1(i8** %P) nounwind ssp {
entry:
store i8* blockaddress(@test1, %l1), i8** %P
br label %l1
l1: ; preds = %l1, %entry
%x.0 = phi i32 [ 0, %entry ], [ %inc, %l1 ]
%inc = add nsw i32 %x.0, 1
%exitcond = icmp eq i32 %inc, 3
br i1 %exitcond, label %l2, label %l1
l2: ; preds = %l1
ret i32 0
}
Add a new attribute, 'noduplicate'. If a function contains a noduplicate call, the call cannot be duplicated - Jump threading, loop unrolling, loop unswitching, and loop rotation are inhibited if they would duplicate the call. Similarly inlining of the function is inhibited, if that would duplicate the call (in particular inlining is still allowed when there is only one callsite and the function has internal linkage). llvm-svn: 170704
2012-12-21 00:04:27 +08:00
; This should not unroll since the call is 'noduplicate'.
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 09:42:54 +08:00
; CHECK-LABEL: @test2(
Add a new attribute, 'noduplicate'. If a function contains a noduplicate call, the call cannot be duplicated - Jump threading, loop unrolling, loop unswitching, and loop rotation are inhibited if they would duplicate the call. Similarly inlining of the function is inhibited, if that would duplicate the call (in particular inlining is still allowed when there is only one callsite and the function has internal linkage). llvm-svn: 170704
2012-12-21 00:04:27 +08:00
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()