d07f106e51
When the base pointer r30 is used to hold the stack pointer, r30 is spilled in the prologue. On AIX registers are saved from highest to lowest, so r31 also needs to be saved. Fixes https://github.com/llvm/llvm-project/issues/96411
47 lines
1.5 KiB
LLVM
47 lines
1.5 KiB
LLVM
; RUN: llc -mcpu=pwr7 -mattr=-altivec -verify-machineinstrs \
|
|
; RUN: -mtriple=powerpc-unknown-aix < %s | FileCheck %s --check-prefix 32BIT
|
|
|
|
; RUN: llc -mcpu=pwr7 -mattr=-altivec -verify-machineinstrs \
|
|
; RUN: -mtriple=powerpc64-unknown-aix < %s | FileCheck %s --check-prefix 64BIT
|
|
|
|
; Use an overaligned buffer to force base-pointer usage. Test verifies:
|
|
; - base pointer register (r30) is saved/defined/restored.
|
|
; - frame pointer register (r31) is saved/defined/restored.
|
|
; - stack frame is allocated with correct alignment.
|
|
; - Address of %AlignedBuffer is calculated based off offset from the stack
|
|
; pointer.
|
|
|
|
define float @caller(float %f) {
|
|
%AlignedBuffer = alloca [32 x i32], align 32
|
|
call void @callee(ptr %AlignedBuffer)
|
|
ret float %f
|
|
}
|
|
|
|
declare void @callee(ptr)
|
|
|
|
; 32BIT-LABEL: .caller:
|
|
; 32BIT: stw 30, -16(1)
|
|
; 32BIT: mr 30, 1
|
|
; 32BIT: clrlwi 0, 1, 27
|
|
; 32BIT: subfic 0, 0, -224
|
|
; 32BIT: stwux 1, 1, 0
|
|
; 32BIT: addi 3, 1, 64
|
|
; 32BIT: stw 31, -12(30)
|
|
; 32BIT: bl .callee
|
|
; 32BIT: lwz 31, -12(30)
|
|
; 32BIT: mr 1, 30
|
|
; 32BIT: lwz 30, -16(1)
|
|
|
|
; 64BIT-LABEL: .caller:
|
|
; 64BIT: std 30, -24(1)
|
|
; 64BIT: mr 30, 1
|
|
; 64BIT: clrldi 0, 1, 59
|
|
; 64BIT: subfic 0, 0, -288
|
|
; 64BIT: stdux 1, 1, 0
|
|
; 64BIT: addi 3, 1, 128
|
|
; 64BIT: std 31, -16(30)
|
|
; 64BIT: bl .callee
|
|
; 64BIT: ld 31, -16(30)
|
|
; 64BIT: mr 1, 30
|
|
; 64BIT: ld 30, -24(1)
|