6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-07-21 18:29:45 +00:00
Code Issues Projects Releases Wiki Activity

Add Uses=[SP] to call instructions. This fixes a miscompilation with a

Browse Source 
variable sized alloca.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138433 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Osborne 2011-08-24 13:32:43 +00:00
parent 13894fa135
commit 8f9c5cca4f
2 changed files with 22 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
lib/Target/XCore/XCoreInstrInfo.td
View File

@ -739,7 +739,7 @@ def LDAP_lu10_ba : _FLU10<(outs),
let isCall=1,
// All calls clobber the link register and the non-callee-saved registers:
Defs = [R0, R1, R2, R3, R11, LR] in {
Defs = [R0, R1, R2, R3, R11, LR], Uses = [SP] in {
def BL_u10 : _FU10<
(outs),
(ins calltarget:$target, variable_ops),
@ -981,7 +981,7 @@ def ECALLF_1r : _F1R<(outs), (ins GRRegs:$src),
let isCall=1,
// All calls clobber the link register and the non-callee-saved registers:
Defs = [R0, R1, R2, R3, R11, LR] in {
Defs = [R0, R1, R2, R3, R11, LR], Uses = [SP] in {
def BLA_1r : _F1R<(outs), (ins GRRegs:$addr, variable_ops),
"bla $addr",
[(XCoreBranchLink GRRegs:$addr)]>;

20
test/CodeGen/XCore/2011-08-01-DynamicAllocBug.ll Normal file
View File

@ -0,0 +1,20 @@
; RUN: llc < %s -march=xcore | FileCheck %s
declare void @g()
declare i8* @llvm.stacksave() nounwind
declare void @llvm.stackrestore(i8*) nounwind
define void @f(i32** %p, i32 %size) {
allocas:
%0 = call i8* @llvm.stacksave()
%a = alloca i32, i32 %size
store i32* %a, i32** %p
call void @g()
call void @llvm.stackrestore(i8* %0)
ret void
}
; CHECK: f:
; CHECK: ldaw [[REGISTER:r[0-9]+]], {{r[0-9]+}}[-r1]
; CHECK: set sp, [[REGISTER]]
; CHECK extsp 1
; CHECK bl g