llvm/test/CodeGen/PowerPC/Frames-large.ll
Dale Johannesen f7801b493e Do not store R31 into the caller's link area on PPC.
This violates the ABI (that area is "reserved"), and
while it is safe if all code is generated with current
compilers, there is some very old code around that uses
that slot for something else, and breaks if it is stored
into.  Adjust testcases looking for current behavior.
I've verified that the stack frame size is right in all
testcases, whether it changed or not.  7311323.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89811 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-24 22:59:02 +00:00

53 lines
1.3 KiB
LLVM

; RUN: llvm-as < %s > %t.bc
; RUN: llc < %t.bc -march=ppc32 | FileCheck %s -check-prefix=PPC32-NOFP
; RUN: llc < %t.bc -march=ppc32 -disable-fp-elim | FileCheck %s -check-prefix=PPC32-FP
; RUN: llc < %t.bc -march=ppc64 | FileCheck %s -check-prefix=PPC64-NOFP
; RUN: llc < %t.bc -march=ppc64 -disable-fp-elim | FileCheck %s -check-prefix=PPC64-FP
target triple = "powerpc-apple-darwin8"
define i32* @f1() nounwind {
%tmp = alloca i32, i32 8191 ; <i32*> [#uses=1]
ret i32* %tmp
}
; PPC32-NOFP: _f1:
; PPC32-NOFP: lis r0, -1
; PPC32-NOFP: ori r0, r0, 32704
; PPC32-NOFP: stwux r1, r1, r0
; PPC32-NOFP: addi r3, r1, 68
; PPC32-NOFP: lwz r1, 0(r1)
; PPC32-NOFP: blr
; PPC32-FP: _f1:
; PPC32-FP: stw r31, -4(r1)
; PPC32-FP: lis r0, -1
; PPC32-FP: ori r0, r0, 32704
; PPC32-FP: stwux r1, r1, r0
; ...
; PPC32-FP: lwz r1, 0(r1)
; PPC32-FP: lwz r31, -4(r1)
; PPC32-FP: blr
; PPC64-NOFP: _f1:
; PPC64-NOFP: lis r0, -1
; PPC64-NOFP: ori r0, r0, 32656
; PPC64-NOFP: stdux r1, r1, r0
; PPC64-NOFP: addi r3, r1, 116
; PPC64-NOFP: ld r1, 0(r1)
; PPC64-NOFP: blr
; PPC64-FP: _f1:
; PPC64-FP: std r31, -8(r1)
; PPC64-FP: lis r0, -1
; PPC64-FP: ori r0, r0, 32640
; PPC64-FP: stdux r1, r1, r0
; ...
; PPC64-FP: ld r1, 0(r1)
; PPC64-FP: ld r31, -8(r1)
; PPC64-FP: blr