mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-27 13:29:50 +00:00
f2f6ce65b7
input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
57 lines
2.0 KiB
LLVM
57 lines
2.0 KiB
LLVM
; RUN: opt < %s -instcombine -S | grep {call.*stackrestore} | count 1
|
|
|
|
declare i8* @llvm.stacksave()
|
|
declare void @llvm.stackrestore(i8*)
|
|
|
|
;; Test that llvm.stackrestore is removed when possible.
|
|
define i32* @test1(i32 %P) {
|
|
%tmp = call i8* @llvm.stacksave( )
|
|
call void @llvm.stackrestore( i8* %tmp ) ;; not restoring anything
|
|
%A = alloca i32, i32 %P
|
|
ret i32* %A
|
|
}
|
|
|
|
define void @test2(i8* %X) {
|
|
call void @llvm.stackrestore( i8* %X ) ;; no allocas before return.
|
|
ret void
|
|
}
|
|
|
|
define void @foo(i32 %size) nounwind {
|
|
entry:
|
|
%tmp118124 = icmp sgt i32 %size, 0 ; <i1> [#uses=1]
|
|
br i1 %tmp118124, label %bb.preheader, label %return
|
|
|
|
bb.preheader: ; preds = %entry
|
|
%tmp25 = add i32 %size, -1 ; <i32> [#uses=1]
|
|
%tmp125 = icmp slt i32 %size, 1 ; <i1> [#uses=1]
|
|
%smax = select i1 %tmp125, i32 1, i32 %size ; <i32> [#uses=1]
|
|
br label %bb
|
|
|
|
bb: ; preds = %bb, %bb.preheader
|
|
%i.0.reg2mem.0 = phi i32 [ 0, %bb.preheader ], [ %indvar.next, %bb ] ; <i32> [#uses=2]
|
|
%tmp = call i8* @llvm.stacksave( ) ; <i8*> [#uses=1]
|
|
%tmp23 = alloca i8, i32 %size ; <i8*> [#uses=2]
|
|
%tmp27 = getelementptr i8* %tmp23, i32 %tmp25 ; <i8*> [#uses=1]
|
|
store i8 0, i8* %tmp27, align 1
|
|
%tmp28 = call i8* @llvm.stacksave( ) ; <i8*> [#uses=1]
|
|
%tmp52 = alloca i8, i32 %size ; <i8*> [#uses=1]
|
|
%tmp53 = call i8* @llvm.stacksave( ) ; <i8*> [#uses=1]
|
|
%tmp77 = alloca i8, i32 %size ; <i8*> [#uses=1]
|
|
%tmp78 = call i8* @llvm.stacksave( ) ; <i8*> [#uses=1]
|
|
%tmp102 = alloca i8, i32 %size ; <i8*> [#uses=1]
|
|
call void @bar( i32 %i.0.reg2mem.0, i8* %tmp23, i8* %tmp52, i8* %tmp77, i8* %tmp102, i32 %size ) nounwind
|
|
call void @llvm.stackrestore( i8* %tmp78 )
|
|
call void @llvm.stackrestore( i8* %tmp53 )
|
|
call void @llvm.stackrestore( i8* %tmp28 )
|
|
call void @llvm.stackrestore( i8* %tmp )
|
|
%indvar.next = add i32 %i.0.reg2mem.0, 1 ; <i32> [#uses=2]
|
|
%exitcond = icmp eq i32 %indvar.next, %smax ; <i1> [#uses=1]
|
|
br i1 %exitcond, label %return, label %bb
|
|
|
|
return: ; preds = %bb, %entry
|
|
ret void
|
|
}
|
|
|
|
declare void @bar(i32, i8*, i8*, i8*, i8*, i32)
|
|
|