342 lines
12 KiB
LLVM
342 lines
12 KiB
LLVM
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;; Check that this produces the expected assembly output
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; RUN: llc -mtriple=thumbv7-windows -o - %s -verify-machineinstrs | FileCheck %s
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;; Also try to write an object file, which verifies that the SEH opcodes
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;; match the actual prologue/epilogue length.
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; RUN: llc -mtriple=thumbv7-windows -filetype=obj -o %t.obj %s -verify-machineinstrs
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; CHECK-LABEL: clobberR4Frame:
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; CHECK-NEXT: .seh_proc clobberR4Frame
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; CHECK-NEXT: @ %bb.0: @ %entry
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; CHECK-NEXT: push.w {r4, r7, r11, lr}
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; CHECK-NEXT: .seh_save_regs_w {r4, r7, r11, lr}
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; CHECK-NEXT: add.w r11, sp, #8
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; CHECK-NEXT: .seh_nop_w
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: bl other
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: pop.w {r4, r7, r11, pc}
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; CHECK-NEXT: .seh_save_regs_w {r4, r7, r11, lr}
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: .seh_endproc
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define arm_aapcs_vfpcc void @clobberR4Frame() uwtable "frame-pointer"="all" {
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entry:
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call arm_aapcs_vfpcc void @other()
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call void asm sideeffect "", "~{r4}"()
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ret void
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}
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; CHECK-LABEL: clobberR4NoFrame:
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; CHECK-NEXT: .seh_proc clobberR4NoFrame
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; CHECK-NEXT: @ %bb.0: @ %entry
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; CHECK-NEXT: push {r4, lr}
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; CHECK-NEXT: .seh_save_regs {r4, lr}
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: bl other
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: pop {r4, pc}
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; CHECK-NEXT: .seh_save_regs {r4, lr}
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: .seh_endproc
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define arm_aapcs_vfpcc void @clobberR4NoFrame() uwtable "frame-pointer"="none" {
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entry:
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call arm_aapcs_vfpcc void @other()
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call void asm sideeffect "", "~{r4}"()
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ret void
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}
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; CHECK-LABEL: clobberR4Tail:
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; CHECK-NEXT: .seh_proc clobberR4Tail
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; CHECK-NEXT: @ %bb.0: @ %entry
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; CHECK-NEXT: push {r4, lr}
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; CHECK-NEXT: .seh_save_regs {r4, lr}
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; CHECK-NEXT: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: pop.w {r4, lr}
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; CHECK-NEXT: .seh_save_regs_w {r4, lr}
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; CHECK-NEXT: b.w other
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; CHECK-NEXT: .seh_nop_w
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: .seh_endproc
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define arm_aapcs_vfpcc void @clobberR4Tail() uwtable "frame-pointer"="none" {
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entry:
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call void asm sideeffect "", "~{r4}"()
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tail call arm_aapcs_vfpcc void @other()
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ret void
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}
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; CHECK-LABEL: clobberD8D10:
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; CHECK-NEXT: .seh_proc clobberD8D10
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; CHECK-NEXT: @ %bb.0: @ %entry
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; CHECK-NEXT: vpush {d8, d9, d10}
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; CHECK-NEXT: .seh_save_fregs {d8-d10}
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; CHECK-NEXT: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: vpop {d8, d9, d10}
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; CHECK-NEXT: .seh_save_fregs {d8-d10}
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; CHECK-NEXT: b.w other
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; CHECK-NEXT: .seh_nop_w
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: .seh_endproc
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define arm_aapcs_vfpcc void @clobberD8D10() uwtable "frame-pointer"="none" {
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entry:
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call void asm sideeffect "", "~{d8},~{d9},~{d10}"()
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tail call arm_aapcs_vfpcc void @other()
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ret void
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}
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declare arm_aapcs_vfpcc void @other()
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; CHECK-LABEL: vararg:
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; CHECK-NEXT: .seh_proc vararg
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; CHECK-NEXT: @ %bb.0: @ %entry
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; CHECK-NEXT: sub sp, #12
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; CHECK-NEXT: .seh_stackalloc 12
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; CHECK-NEXT: push.w {r11, lr}
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; CHECK-NEXT: .seh_save_regs_w {r11, lr}
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; CHECK-NEXT: sub sp, #4
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; CHECK-NEXT: .seh_stackalloc 4
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; CHECK-NEXT: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: add sp, #4
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; CHECK-NEXT: .seh_stackalloc 4
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; CHECK-NEXT: pop.w {r11, lr}
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; CHECK-NEXT: .seh_save_regs_w {r11, lr}
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; CHECK-NEXT: add sp, #12
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; CHECK-NEXT: .seh_stackalloc 12
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; CHECK-NEXT: bx lr
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; CHECK-NEXT: .seh_nop
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: .seh_endproc
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define arm_aapcs_vfpcc void @vararg(i32 noundef %a, ...) uwtable "frame-pointer"="none" {
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entry:
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%ap = alloca ptr, align 4
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call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %ap)
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call void @llvm.va_start(ptr nonnull %ap)
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%0 = load ptr, ptr %ap
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call arm_aapcs_vfpcc void @useva(ptr noundef %0)
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call void @llvm.va_end(ptr nonnull %ap)
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call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %ap)
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ret void
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}
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declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture)
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declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture)
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declare void @llvm.va_start(ptr)
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declare void @llvm.va_end(ptr)
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declare arm_aapcs_vfpcc void @useva(ptr noundef)
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; CHECK-LABEL: onlystack:
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; CHECK-NEXT: .seh_proc onlystack
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; CHECK-NEXT: @ %bb.0: @ %entry
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; CHECK-NEXT: sub sp, #4
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; CHECK-NEXT: .seh_stackalloc 4
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; CHECK-NEXT: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: add sp, #4
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; CHECK-NEXT: .seh_stackalloc 4
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; CHECK-NEXT: bx lr
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; CHECK-NEXT: .seh_nop
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: .seh_endproc
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define dso_local arm_aapcs_vfpcc void @onlystack() uwtable "frame-pointer"="none" {
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entry:
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%buf = alloca [4 x i8], align 1
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call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %buf)
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call void asm sideeffect "", "r"(ptr nonnull %buf)
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call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %buf)
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ret void
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}
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; CHECK-LABEL: func50:
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; CHECK-NEXT: .seh_proc func50
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; CHECK-NEXT: @ %bb.0: @ %entry
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; CHECK-NEXT: push.w {r11, lr}
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; CHECK-NEXT: .seh_save_regs_w {r11, lr}
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; CHECK-NEXT: sub sp, #56
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; CHECK-NEXT: .seh_stackalloc 56
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; CHECK-NEXT: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: add sp, #56
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; CHECK-NEXT: .seh_stackalloc 56
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; CHECK-NEXT: pop.w {r11, pc}
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; CHECK-NEXT: .seh_save_regs_w {r11, lr}
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: .seh_endproc
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define arm_aapcs_vfpcc void @func50() {
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entry:
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%buf = alloca [50 x i8], align 1
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call void @llvm.lifetime.start.p0(i64 50, ptr nonnull %buf)
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call arm_aapcs_vfpcc void @useptr(ptr noundef nonnull %buf)
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call void @llvm.lifetime.end.p0(i64 50, ptr nonnull %buf)
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ret void
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}
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; CHECK-LABEL: func4000:
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; CHECK-NEXT: .seh_proc func4000
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; CHECK-NEXT: @ %bb.0: @ %entry
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; CHECK-NEXT: push.w {r11, lr}
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; CHECK-NEXT: .seh_save_regs_w {r11, lr}
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; CHECK-NEXT: sub.w sp, sp, #4000
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; CHECK-NEXT: .seh_stackalloc_w 4000
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; CHECK-NEXT: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: add.w sp, sp, #4000
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; CHECK-NEXT: .seh_stackalloc_w 4000
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; CHECK-NEXT: pop.w {r11, pc}
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; CHECK-NEXT: .seh_save_regs_w {r11, lr}
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: .seh_endproc
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define arm_aapcs_vfpcc void @func4000() {
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entry:
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%buf = alloca [4000 x i8], align 1
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call void @llvm.lifetime.start.p0(i64 4000, ptr nonnull %buf)
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call arm_aapcs_vfpcc void @useptr(ptr noundef nonnull %buf)
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call void @llvm.lifetime.end.p0(i64 4000, ptr nonnull %buf)
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ret void
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}
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; CHECK-LABEL: func5000:
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; CHECK-NEXT: .seh_proc func5000
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; CHECK-NEXT: @ %bb.0: @ %entry
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; CHECK-NEXT: push {r4, r5, r6, lr}
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; CHECK-NEXT: .seh_save_regs {r4-r6, lr}
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; CHECK-NEXT: movw r4, #1250
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; CHECK-NEXT: .seh_nop_w
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; CHECK-NEXT: bl __chkstk
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; CHECK-NEXT: .seh_nop_w
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; CHECK-NEXT: sub.w sp, sp, r4
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; CHECK-NEXT: .seh_stackalloc_w 5000
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; CHECK-NEXT: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: add.w sp, sp, #4992
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; CHECK-NEXT: .seh_stackalloc_w 4992
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; CHECK-NEXT: add sp, #8
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; CHECK-NEXT: .seh_stackalloc 8
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; CHECK-NEXT: pop {r4, r5, r6, pc}
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; CHECK-NEXT: .seh_save_regs {r4-r6, lr}
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: .seh_endproc
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define arm_aapcs_vfpcc void @func5000() {
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entry:
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%buf = alloca [5000 x i8], align 1
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call void @llvm.lifetime.start.p0(i64 5000, ptr nonnull %buf)
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call arm_aapcs_vfpcc void @useptr(ptr noundef nonnull %buf)
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call void @llvm.lifetime.end.p0(i64 5000, ptr nonnull %buf)
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ret void
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}
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; CHECK-LABEL: func262144:
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; CHECK-NEXT: .seh_proc func262144
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; CHECK-NEXT: @ %bb.0: @ %entry
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; CHECK-NEXT: push {r4, r5, r6, lr}
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; CHECK-NEXT: .seh_save_regs {r4-r6, lr}
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; CHECK-NEXT: movs r4, #0
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; CHECK-NEXT: .seh_nop
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; CHECK-NEXT: movt r4, #1
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; CHECK-NEXT: .seh_nop_w
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; CHECK-NEXT: bl __chkstk
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; CHECK-NEXT: .seh_nop_w
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; CHECK-NEXT: sub.w sp, sp, r4
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; CHECK-NEXT: .seh_stackalloc_w 262144
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; CHECK-NEXT: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: add.w sp, sp, #262144
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; CHECK-NEXT: .seh_stackalloc_w 262144
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; CHECK-NEXT: pop {r4, r5, r6, pc}
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; CHECK-NEXT: .seh_save_regs {r4-r6, lr}
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: .seh_endproc
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define arm_aapcs_vfpcc void @func262144() {
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entry:
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%buf = alloca [262144 x i8], align 1
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call void @llvm.lifetime.start.p0(i64 262144, ptr nonnull %buf)
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call arm_aapcs_vfpcc void @useptr(ptr noundef nonnull %buf)
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call void @llvm.lifetime.end.p0(i64 262144, ptr nonnull %buf)
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ret void
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}
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; CHECK-LABEL: func270000:
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; CHECK-NEXT: .seh_proc func270000
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; CHECK-NEXT: @ %bb.0: @ %entry
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; CHECK-NEXT: push {r4, r5, r6, lr}
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; CHECK-NEXT: .seh_save_regs {r4-r6, lr}
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; CHECK-NEXT: movw r4, #1964
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; CHECK-NEXT: .seh_nop_w
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; CHECK-NEXT: movt r4, #1
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; CHECK-NEXT: .seh_nop_w
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; CHECK-NEXT: bl __chkstk
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; CHECK-NEXT: .seh_nop_w
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; CHECK-NEXT: sub.w sp, sp, r4
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; CHECK-NEXT: .seh_stackalloc_w 270000
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; CHECK-NEXT: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: add.w sp, sp, #268288
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; CHECK-NEXT: .seh_stackalloc_w 268288
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; CHECK-NEXT: add.w sp, sp, #1712
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; CHECK-NEXT: .seh_stackalloc_w 1712
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; CHECK-NEXT: pop {r4, r5, r6, pc}
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; CHECK-NEXT: .seh_save_regs {r4-r6, lr}
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: .seh_endproc
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define arm_aapcs_vfpcc void @func270000() {
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entry:
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%buf = alloca [270000 x i8], align 1
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call void @llvm.lifetime.start.p0(i64 270000, ptr nonnull %buf)
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call arm_aapcs_vfpcc void @useptr(ptr noundef nonnull %buf)
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call void @llvm.lifetime.end.p0(i64 270000, ptr nonnull %buf)
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ret void
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}
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declare arm_aapcs_vfpcc void @useptr(ptr noundef)
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; CHECK-LABEL: func_fp:
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; CHECK-NEXT: .seh_proc func_fp
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; CHECK-NEXT: @ %bb.0: @ %entry
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||
|
|
; CHECK-NEXT: str r11, [sp, #-4]!
|
||
|
|
; CHECK-NEXT: .seh_save_regs_w {r11}
|
||
|
|
; CHECK-NEXT: mov r11, sp
|
||
|
|
; CHECK-NEXT: .seh_save_sp r11
|
||
|
|
; CHECK-NEXT: .seh_endprologue
|
||
|
|
|
||
|
|
; CHECK-NEXT: mov r0, r11
|
||
|
|
|
||
|
|
; CHECK-NEXT: .seh_startepilogue
|
||
|
|
; CHECK-NEXT: ldr r11, [sp], #4
|
||
|
|
; CHECK-NEXT: .seh_save_regs_w {r11}
|
||
|
|
; CHECK-NEXT: bx lr
|
||
|
|
; CHECK-NEXT: .seh_nop
|
||
|
|
; CHECK-NEXT: .seh_endepilogue
|
||
|
|
; CHECK-NEXT: .seh_endproc
|
||
|
|
|
||
|
|
define arm_aapcs_vfpcc i32 @func_fp() {
|
||
|
|
entry:
|
||
|
|
%0 = tail call ptr @llvm.frameaddress.p0(i32 0)
|
||
|
|
%1 = ptrtoint ptr %0 to i32
|
||
|
|
ret i32 %1
|
||
|
|
}
|
||
|
|
|
||
|
|
declare ptr @llvm.frameaddress.p0(i32 immarg)
|