| ; 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 |
| ; __attribute__((noinline)) int h(int a, int b) { return a + b; } |
| ; |
| ; int f(int a, int b, int c, int d) { |
| ; if (a < 0) |
| ; return -1; |
| ; a = h(a, b); |
| ; return 2 + a * (a + b) / (c + d); |
| ; } |
| ; |
| ; int g(int a, int b, int c, int d) { |
| ; if (a < 0) |
| ; return -1; |
| ; a = h(a, b); |
| ; return 1 + a * (a + b) / (c + d); |
| ; } |
| ; Check CFI instructions inside the outlined function. |
| |
| define dso_local i32 @h(i32 %a, i32 %b) local_unnamed_addr #0 { |
| entry: |
| %add = add nsw i32 %b, %a |
| ret i32 %add |
| } |
| |
| define dso_local i32 @f(i32 %a, i32 %b, i32 %c, i32 %d) local_unnamed_addr #1 { |
| entry: |
| %cmp = icmp slt i32 %a, 0 |
| br i1 %cmp, label %return, label %if.end |
| |
| if.end: ; preds = %entry |
| %call = tail call i32 @h(i32 %a, i32 %b) #2 |
| %add = add nsw i32 %call, %b |
| %mul = mul nsw i32 %add, %call |
| %add1 = add nsw i32 %d, %c |
| %div = sdiv i32 %mul, %add1 |
| %add2 = add nsw i32 %div, 2 |
| br label %return |
| |
| return: ; preds = %entry, %if.end |
| %retval.0 = phi i32 [ %add2, %if.end ], [ -1, %entry ] |
| ret i32 %retval.0 |
| } |
| |
| define dso_local i32 @g(i32 %a, i32 %b, i32 %c, i32 %d) local_unnamed_addr #1 { |
| entry: |
| %cmp = icmp slt i32 %a, 0 |
| br i1 %cmp, label %return, label %if.end |
| |
| if.end: ; preds = %entry |
| %call = tail call i32 @h(i32 %a, i32 %b) #2 |
| %add = add nsw i32 %call, %b |
| %mul = mul nsw i32 %add, %call |
| %add1 = add nsw i32 %d, %c |
| %div = sdiv i32 %mul, %add1 |
| %add2 = add nsw i32 %div, 1 |
| br label %return |
| |
| return: ; preds = %entry, %if.end |
| %retval.0 = phi i32 [ %add2, %if.end ], [ -1, %entry ] |
| ret i32 %retval.0 |
| } |
| |
| ; CHECK-LABEL: OUTLINED_FUNCTION_0: |
| ; CHECK: str lr, [sp, #-8]! |
| ; CHECK-NEXT: .cfi_def_cfa_offset 8 |
| ; CHECK-NEXT: .cfi_offset lr, -8 |
| ; CHECK: ldr lr, [sp], #8 |
| ; CHECK-NEXT: .cfi_def_cfa_offset 0 |
| ; CHECK-NEXT: .cfi_restore lr |
| ; CHECK-NEXT: bx lr |
| |
| attributes #0 = { minsize noinline norecurse nounwind optsize readnone } |
| attributes #1 = { minsize norecurse nounwind optsize readnone } |
| attributes #2 = { minsize optsize } |