74 lines
2.0 KiB
LLVM
74 lines
2.0 KiB
LLVM
; RUN: llc --verify-machineinstrs --force-dwarf-frame-section %s -o - | FileCheck %s
|
|
target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
|
|
target triple = "thumbv7m-unknown-unknown-eabi"
|
|
|
|
; Derived from
|
|
; volatile int a, b, c, d, e, f, g, h;
|
|
;
|
|
; int x() {
|
|
; int r = a + b + c + d + e + f;
|
|
; return r + 1;
|
|
; }
|
|
;
|
|
;
|
|
; int y() {
|
|
; int r = a + b + c + d + e + f;
|
|
; return r + 2;
|
|
; }
|
|
; Check CFI instructions when LR is saved/restored to/from a register.
|
|
|
|
@a = dso_local global i32 0, align 4
|
|
@b = dso_local global i32 0, align 4
|
|
@c = dso_local global i32 0, align 4
|
|
@d = dso_local global i32 0, align 4
|
|
@e = dso_local global i32 0, align 4
|
|
@f = dso_local global i32 0, align 4
|
|
|
|
define dso_local i32 @x() local_unnamed_addr #0 {
|
|
entry:
|
|
%0 = load volatile i32, i32* @a, align 4
|
|
%1 = load volatile i32, i32* @b, align 4
|
|
%2 = load volatile i32, i32* @c, align 4
|
|
%3 = load volatile i32, i32* @d, align 4
|
|
%4 = load volatile i32, i32* @e, align 4
|
|
%5 = load volatile i32, i32* @f, align 4
|
|
%add = add i32 %0, 1
|
|
%add1 = add i32 %add, %1
|
|
%add2 = add i32 %add1, %2
|
|
%add3 = add i32 %add2, %3
|
|
%add4 = add i32 %add3, %4
|
|
%add5 = add i32 %add4, %5
|
|
ret i32 %add5
|
|
}
|
|
; CHECK-LABEL: x:
|
|
; CHECK: mov r3, lr
|
|
; CHECK-NEXT: .cfi_register lr, r3
|
|
; CHECK-NEXT: bl OUTLINED_FUNCTION_0
|
|
; CHECK-NEXT: mov lr, r3
|
|
; CHECK-NEXT: .cfi_restore lr
|
|
|
|
define dso_local i32 @y() local_unnamed_addr #0 {
|
|
entry:
|
|
%0 = load volatile i32, i32* @a, align 4
|
|
%1 = load volatile i32, i32* @b, align 4
|
|
%2 = load volatile i32, i32* @c, align 4
|
|
%3 = load volatile i32, i32* @d, align 4
|
|
%4 = load volatile i32, i32* @e, align 4
|
|
%5 = load volatile i32, i32* @f, align 4
|
|
%add = add i32 %0, 2
|
|
%add1 = add i32 %add, %1
|
|
%add2 = add i32 %add1, %2
|
|
%add3 = add i32 %add2, %3
|
|
%add4 = add i32 %add3, %4
|
|
%add5 = add i32 %add4, %5
|
|
ret i32 %add5
|
|
}
|
|
; CHECK-LABEL: y:
|
|
; CHECK: mov r3, lr
|
|
; CHECK-NEXT: .cfi_register lr, r3
|
|
; CHECK-NEXT: bl OUTLINED_FUNCTION_0
|
|
; CHECK-NEXT: mov lr, r3
|
|
; CHECK-NEXT: .cfi_restore lr
|
|
|
|
attributes #0 = { minsize nofree norecurse nounwind optsize }
|