6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-04-05 01:31:05 +00:00
Code Issues Projects Releases Wiki Activity

new testcases for the stackrestore instcombine optimizations

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25297 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-01-13 22:01:47 +00:00
parent b8414333ac
commit e5445dc6a2
1 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
test/Transforms/InstCombine/stacksaverestore.ll Normal file
View File

@ -0,0 +1,20 @@
; RUN: llvm-as < %s | opt -instcombine -disable-output &&
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep call
;; Test that llvm.stackrestore is removed when possible.
int* %test1(uint %P) {
%tmp = call sbyte* %llvm.stacksave()
call void %llvm.stackrestore(sbyte* %tmp) ;; not restoring anything
%A = alloca int, uint %P
ret int* %A
}
void %test2(sbyte* %X) {
call void %llvm.stackrestore(sbyte* %X) ;; no allocas before return.
ret void
}
declare sbyte* %llvm.stacksave()
declare void %llvm.stackrestore(sbyte*)