68 lines
1.8 KiB
LLVM
68 lines
1.8 KiB
LLVM
|
; RUN: llc -mtriple=thumbv7m-eabi %s -o - | FileCheck %s
|
||
|
|
|
||
|
|
; Check an edge case of the outlining costs -
|
||
|
|
; outlining occurs in this test and does not in `bti-outliner-cost-2.ll`
|
||
|
|
; the only difference being the branch target enforcement is enabled in the
|
||
|
|
; latter one.
|
||
|
|
|
||
|
|
; volatile int a, b, c, d, e;
|
||
|
|
;
|
||
|
|
; int y(int p) {
|
||
|
|
; int r = (a + b) / (c + d) * e;
|
||
|
|
; return r + 1;
|
||
|
|
; }
|
||
|
|
;
|
||
|
|
; int y(int p) {
|
||
|
|
; int r = (a + b) / (c + d) * e;
|
||
|
|
; return r + 2;
|
||
|
|
; }
|
||
|
|
|
||
|
|
@a = hidden global i32 0, align 4
|
||
|
|
@b = hidden global i32 0, align 4
|
||
|
|
@c = hidden global i32 0, align 4
|
||
|
|
@d = hidden global i32 0, align 4
|
||
|
|
@e = hidden global i32 0, align 4
|
||
|
|
|
||
|
|
define hidden i32 @x(i32 %p) local_unnamed_addr #0 {
|
||
|
|
entry:
|
||
|
|
%0 = load volatile i32, ptr @a, align 4
|
||
|
|
%1 = load volatile i32, ptr @b, align 4
|
||
|
|
%add = add nsw i32 %1, %0
|
||
|
|
%2 = load volatile i32, ptr @c, align 4
|
||
|
|
%3 = load volatile i32, ptr @d, align 4
|
||
|
|
%add1 = add nsw i32 %3, %2
|
||
|
|
%div = sdiv i32 %add, %add1
|
||
|
|
%4 = load volatile i32, ptr @e, align 4
|
||
|
|
%mul = mul nsw i32 %4, %div
|
||
|
|
%add2 = add nsw i32 %mul, 1
|
||
|
|
ret i32 %add2
|
||
|
|
}
|
||
|
|
; CHECK-LABEL: x:
|
||
|
|
; CHECK: bl OUTLINED_FUNCTION_0
|
||
|
|
|
||
|
|
define hidden i32 @y(i32 %p) local_unnamed_addr #0 {
|
||
|
|
entry:
|
||
|
|
%0 = load volatile i32, ptr @a, align 4
|
||
|
|
%1 = load volatile i32, ptr @b, align 4
|
||
|
|
%add = add nsw i32 %1, %0
|
||
|
|
%2 = load volatile i32, ptr @c, align 4
|
||
|
|
%3 = load volatile i32, ptr @d, align 4
|
||
|
|
%add1 = add nsw i32 %3, %2
|
||
|
|
%div = sdiv i32 %add, %add1
|
||
|
|
%4 = load volatile i32, ptr @e, align 4
|
||
|
|
%mul = mul nsw i32 %4, %div
|
||
|
|
%add2 = add nsw i32 %mul, 2
|
||
|
|
ret i32 %add2
|
||
|
|
}
|
||
|
|
; CHECK-LABEL: y:
|
||
|
|
; CHECK: bl OUTLINED_FUNCTION_0
|
||
|
|
|
||
|
|
; CHECK-LABEL: OUTLINED_FUNCTION_0:
|
||
|
|
; CHECK-NOT: bti
|
||
|
|
|
||
|
|
attributes #0 = { minsize nofree norecurse nounwind optsize }
|
||
|
|
|
||
|
|
!llvm.module.flags = !{!0}
|
||
|
|
|
||
|
|
!0 = !{i32 8, !"branch-target-enforcement", i32 0}
|