maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/Transforms/TailCallElim/inf-recursion.ll

34 lines
787 B
LLVM
Raw Normal View History

Refine the detection of seemingly infinitely recursive calls where the callee is expected to be expanded to something else by codegen, so that normal infinitely recursive calls are still transformed. llvm-svn: 101468
2010-04-16 23:57:50 +08:00
; RUN: opt < %s -tailcallelim -S | FileCheck %s
Prevent tailcallelim from breaking "recursive" calls to builtins. llvm-svn: 41804
2007-09-11 04:58:55 +08:00
; Don't turn this into an infinite loop, this is probably the implementation
; of fabs and we expect the codegen to lower fabs.
Refine the detection of seemingly infinitely recursive calls where the callee is expected to be expanded to something else by codegen, so that normal infinitely recursive calls are still transformed. llvm-svn: 101468
2010-04-16 23:57:50 +08:00
; CHECK: @fabs(double %f)
; CHECK: call
; CHECK: ret
Prevent tailcallelim from breaking "recursive" calls to builtins. llvm-svn: 41804
2007-09-11 04:58:55 +08:00
define double @fabs(double %f) {
entry:
%tmp2 = call double @fabs( double %f ) ; <double> [#uses=1]
ret double %tmp2
}
Refine the detection of seemingly infinitely recursive calls where the callee is expected to be expanded to something else by codegen, so that normal infinitely recursive calls are still transformed. llvm-svn: 101468
2010-04-16 23:57:50 +08:00
; Do turn other calls into infinite loops though.
Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. This conversion 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/;\(.*\)\([A-Za-z0-9_]*\):\( *\)define\([^@]*\)@$FUNC\([( ]*\)\$/;\1\2-LABEL:\3define\4@$FUNC(/g" $TEMP done mv $TEMP $NAME fi done llvm-svn: 186269
2013-07-14 09:50:49 +08:00
; CHECK-LABEL: define double @foo(
Refine the detection of seemingly infinitely recursive calls where the callee is expected to be expanded to something else by codegen, so that normal infinitely recursive calls are still transformed. llvm-svn: 101468
2010-04-16 23:57:50 +08:00
; CHECK-NOT: call
; CHECK: }
define double @foo(double %f) {
%t= call double @foo(double %f)
ret double %t
}
Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. This conversion was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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/;\(.*\)\([A-Za-z0-9_]*\):\( *\)define\([^@]*\)@$FUNC\([( ]*\)\$/;\1\2-LABEL:\3define\4@$FUNC(/g" $TEMP done mv $TEMP $NAME fi done llvm-svn: 186269
2013-07-14 09:50:49 +08:00
; CHECK-LABEL: define float @fabsf(
Refine the detection of seemingly infinitely recursive calls where the callee is expected to be expanded to something else by codegen, so that normal infinitely recursive calls are still transformed. llvm-svn: 101468
2010-04-16 23:57:50 +08:00
; CHECK-NOT: call
; CHECK: }
define float @fabsf(float %f) {
%t= call float @fabsf(float 2.0)
ret float %t
}
declare x86_fp80 @fabsl(x86_fp80 %f)