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llvm-project/llvm/test/Transforms/Inline/recursive.ll

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Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID This is done to avoid odd test failures, like the one fixed in r171243. My previous regex was not good enough to find these. llvm-svn: 171343
2013-01-01 21:57:25 +08:00
; RUN: opt -inline -S < %s | FileCheck %s
Prevent inlining of callees which allocate lots of memory into a recursive caller. Example: void foo() { ... foo(); // I'm recursive! bar(); } bar() { int a[1000]; // large stack size } rdar://10853263 llvm-svn: 164207
2012-09-19 16:08:04 +08:00
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin10.0"
; rdar://10853263
; Make sure that the callee is still here.
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 $NAME fi done llvm-svn: 186269
2013-07-14 09:50:49 +08:00
; CHECK-LABEL: define i32 @callee(
Prevent inlining of callees which allocate lots of memory into a recursive caller. Example: void foo() { ... foo(); // I'm recursive! bar(); } bar() { int a[1000]; // large stack size } rdar://10853263 llvm-svn: 164207
2012-09-19 16:08:04 +08:00
define i32 @callee(i32 %param) {
%yyy = alloca [100000 x i8]
%r = bitcast [100000 x i8]* %yyy to i8*
call void @foo2(i8* %r)
ret i32 4
}
Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. This conversion was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 i32 @caller(
Prevent inlining of callees which allocate lots of memory into a recursive caller. Example: void foo() { ... foo(); // I'm recursive! bar(); } bar() { int a[1000]; // large stack size } rdar://10853263 llvm-svn: 164207
2012-09-19 16:08:04 +08:00
; CHECK-NEXT: entry:
; CHECK-NOT: alloca
; CHECK: ret
define i32 @caller(i32 %param) {
entry:
%t = call i32 @foo(i32 %param)
%cmp = icmp eq i32 %t, -1
br i1 %cmp, label %exit, label %cont
cont:
%r = call i32 @caller(i32 %t)
%f = call i32 @callee(i32 %r)
br label %cont
exit:
ret i32 4
}
declare void @foo2(i8* %in)
declare i32 @foo(i32 %param)