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// This test checks various cases around sharing opcodes between epilogue and prologue
// RUN: llvm-mc -triple thumbv7-pc-win32 -filetype=obj %s | llvm-readobj -u - | FileCheck %s
// CHECK: RuntimeFunction {
// CHECK-NEXT: Function: func1
// CHECK-NEXT: ExceptionRecord:
// CHECK-NEXT: ExceptionData {
// CHECK-NEXT: FunctionLength:
// CHECK-NEXT: Version:
// CHECK-NEXT: ExceptionData:
// CHECK-NEXT: EpiloguePacked: Yes
// CHECK-NEXT: Fragment: No
// CHECK-NEXT: EpilogueOffset: 2
// CHECK-NEXT: ByteCodeLength:
// CHECK-NEXT: Prologue [
// CHECK-NEXT: 0xf5 0x15 ; vpush {d1-d5}
// CHECK-NEXT: 0x05 ; sub sp, #(5 * 4)
// CHECK-NEXT: 0xa0 0xf0 ; push.w {r4-r7, lr}
// CHECK-NEXT: 0xfe ; b.w <target>
// CHECK-NEXT: ]
// CHECK-NEXT: Epilogue [
// CHECK-NEXT: 0x05 ; add sp, #(5 * 4)
// CHECK-NEXT: 0xa0 0xf0 ; pop.w {r4-r7, pc}
// CHECK-NEXT: 0xfe ; b.w <target>
// CHECK-NEXT: ]
// CHECK-NEXT: }
// CHECK-NEXT: }
// CHECK-NEXT: RuntimeFunction {
// CHECK-NEXT: Function: func2
// CHECK-NEXT: ExceptionRecord:
// CHECK-NEXT: ExceptionData {
// CHECK-NEXT: FunctionLength:
// CHECK-NEXT: Version:
// CHECK-NEXT: ExceptionData:
// CHECK-NEXT: EpiloguePacked: Yes
// CHECK-NEXT: Fragment: No
// CHECK-NEXT: EpilogueOffset: 0
// CHECK-NEXT: ByteCodeLength: 4
// CHECK-NEXT: Prologue [
// CHECK-NEXT: 0xd2 ; push {r4-r6}
// CHECK-NEXT: 0x04 ; sub sp, #(4 * 4)
// CHECK-NEXT: 0xfd ; bx <reg>
// CHECK-NEXT: ]
// CHECK-NEXT: }
// CHECK-NEXT: }
// CHECK-NEXT: RuntimeFunction {
// CHECK-NEXT: Function: func3
// CHECK-NEXT: ExceptionRecord:
// CHECK-NEXT: ExceptionData {
// CHECK-NEXT: FunctionLength:
// CHECK-NEXT: Version:
// CHECK-NEXT: ExceptionData:
// CHECK-NEXT: EpiloguePacked: Yes
// CHECK-NEXT: Fragment: No
// CHECK-NEXT: EpilogueOffset: 0
// CHECK-NEXT: ByteCodeLength: 4
// CHECK-NEXT: Prologue [
// CHECK-NEXT: 0xe1 ; vpush {d8-d9}
// CHECK-NEXT: 0xdf ; push.w {r4-r11, lr}
// CHECK-NEXT: ]
// CHECK-NEXT: }
// CHECK-NEXT: }
// CHECK-NEXT: RuntimeFunction {
// CHECK-NEXT: Function: notshared1
// CHECK-NEXT: ExceptionRecord:
// CHECK-NEXT: ExceptionData {
// CHECK-NEXT: FunctionLength:
// CHECK-NEXT: Version:
// CHECK-NEXT: ExceptionData:
// CHECK-NEXT: EpiloguePacked: Yes
// CHECK-NEXT: Fragment:
// CHECK-NEXT: EpilogueOffset: 2
// CHECK-NEXT: ByteCodeLength: 4
// CHECK-NEXT: Prologue [
// CHECK-NEXT: 0xdf ; push.w {r4-r11, lr}
// CHECK-NEXT: ]
// CHECK-NEXT: Epilogue [
// CHECK-NEXT: 0xdb ; pop.w {r4-r11}
// CHECK-NEXT: 0xfd ; bx <reg>
// CHECK-NEXT: ]
// CHECK: RuntimeFunction {
// CHECK-NEXT: Function: notpacked2
// CHECK-NEXT: ExceptionRecord:
// CHECK-NEXT: ExceptionData {
// CHECK-NEXT: FunctionLength:
// CHECK-NEXT: Version:
// CHECK-NEXT: ExceptionData:
// CHECK-NEXT: EpiloguePacked: No
// CHECK: RuntimeFunction {
// CHECK-NEXT: Function: notpacked3
// CHECK-NEXT: ExceptionRecord:
// CHECK-NEXT: ExceptionData {
// CHECK-NEXT: FunctionLength:
// CHECK-NEXT: Version:
// CHECK-NEXT: ExceptionData:
// CHECK-NEXT: EpiloguePacked: No
.text
.syntax unified
.seh_proc func1
func1:
push.w {r4-r7,lr}
.seh_save_regs_w {r4-r7,lr}
sub sp, sp, #20
.seh_stackalloc 20
vpush {d1-d5}
.seh_save_fregs {d1-d5}
.seh_endprologue
nop
.seh_startepilogue
add sp, sp, #20
.seh_stackalloc 20
// As we're popping into lr instead of directly into pc, this pop
// becomes a wide instruction. To match prologue vs epilogue, the
// push in the prologue has been made wide too.
pop.w {r4-r7,lr}
.seh_save_regs_w {r4-r7,lr}
b.w tailcall
.seh_nop_w
.seh_endepilogue
.seh_endproc
.seh_proc func2
func2:
sub sp, sp, #16
.seh_stackalloc 16
push {r4-r6}
.seh_save_regs {r4-r6}
.seh_endprologue
nop
.seh_startepilogue
pop {r4-r6}
.seh_save_regs {r4-r6}
add sp, sp, #16
.seh_stackalloc 16
bx lr
.seh_nop
.seh_endepilogue
.seh_endproc
.seh_proc func3
func3:
push {r4-r11,lr}
.seh_save_regs_w {r4-r11,lr}
vpush {d8-d9}
.seh_save_fregs {d8-d9}
.seh_endprologue
nop
.seh_startepilogue
vpop {d8-d9}
.seh_save_fregs {d8-d9}
pop {r4-r11,pc}
.seh_save_regs_w {r4-r11,pc}
.seh_endepilogue
.seh_endproc
.seh_proc notshared1
notshared1:
push {r4-r11,lr}
.seh_save_regs_w {r4-r11,lr}
.seh_endprologue
nop
.seh_startepilogue
// Packed, but not shared as this opcode doesn't match the prolog
pop {r4-r11}
.seh_save_regs_w {r4-r11}
bx lr
.seh_nop
.seh_endepilogue
.seh_endproc
.seh_proc notpacked2
notpacked2:
push {r4-r11}
.seh_save_regs_w {r4-r11}
vpush {d8-d9}
.seh_save_fregs {d8-d9}
.seh_endprologue
nop
.seh_startepilogue
vpop {d8-d9}
.seh_save_fregs {d8-d9}
pop {r4-r11}
.seh_save_regs_w {r4-r11}
bx lr
.seh_nop
.seh_endepilogue
// Not packed, as the epilog isn't at the end of the function
nop
.seh_endproc
.seh_proc notpacked3
notpacked3:
push {r4-r11,lr}
.seh_save_regs_w {r4-r11,lr}
.seh_endprologue
nop
it ge
// Not packed, as the epilog is conditional
.seh_startepilogue_cond ge
popge {r4-r11,pc}
.seh_save_regs_w {r4-r11,pc}
.seh_endepilogue
.seh_endproc
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