5c3ea07848
We saw a failure caused by unwinding with incomplete CFIs, so we can't outline CFI instructions when they are needed in EH. This is a recommit of0d40688, which was reverted ince83883as related precommit test360d44ecaused some errors. Reviewed By: luismarques Differential Revision: https://reviews.llvm.org/D122634
67 lines
2.2 KiB
LLVM
67 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc -verify-machineinstrs -enable-machine-outliner -mattr=+m -mtriple=riscv64 < %s | FileCheck %s
|
|
|
|
; Ensure that we won't outline CFIs when they are needed in unwinding.
|
|
|
|
define i32 @func1(i32 %x) #0 {
|
|
; CHECK-LABEL: func1:
|
|
; CHECK: # %bb.0: # %entry
|
|
; CHECK-NEXT: addi sp, sp, -16
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 16
|
|
; CHECK-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
|
|
; CHECK-NEXT: sd s0, 0(sp) # 8-byte Folded Spill
|
|
; CHECK-NEXT: .cfi_offset ra, -8
|
|
; CHECK-NEXT: .cfi_offset s0, -16
|
|
; CHECK-NEXT: mulw a0, a0, a0
|
|
; CHECK-NEXT: addiw s0, a0, 1
|
|
; CHECK-NEXT: li a0, 4
|
|
; CHECK-NEXT: call __cxa_allocate_exception@plt
|
|
; CHECK-NEXT: sw s0, 0(a0)
|
|
; CHECK-NEXT: lui a1, %hi(_ZTIi)
|
|
; CHECK-NEXT: addi a1, a1, %lo(_ZTIi)
|
|
; CHECK-NEXT: li a2, 0
|
|
; CHECK-NEXT: call __cxa_throw@plt
|
|
entry:
|
|
%mul = mul i32 %x, %x
|
|
%add = add i32 %mul, 1
|
|
%exception = tail call i8* @__cxa_allocate_exception(i64 4)
|
|
%0 = bitcast i8* %exception to i32*
|
|
store i32 %add, i32* %0
|
|
tail call void @__cxa_throw(i8* %exception, i8* bitcast (i8** @_ZTIi to i8*), i8* null)
|
|
unreachable
|
|
}
|
|
|
|
define i32 @func2(i32 %x) #0 {
|
|
; CHECK-LABEL: func2:
|
|
; CHECK: # %bb.0: # %entry
|
|
; CHECK-NEXT: addi sp, sp, -16
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 16
|
|
; CHECK-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
|
|
; CHECK-NEXT: sd s0, 0(sp) # 8-byte Folded Spill
|
|
; CHECK-NEXT: .cfi_offset ra, -8
|
|
; CHECK-NEXT: .cfi_offset s0, -16
|
|
; CHECK-NEXT: mulw a0, a0, a0
|
|
; CHECK-NEXT: addiw s0, a0, 1
|
|
; CHECK-NEXT: li a0, 4
|
|
; CHECK-NEXT: call __cxa_allocate_exception@plt
|
|
; CHECK-NEXT: sw s0, 0(a0)
|
|
; CHECK-NEXT: lui a1, %hi(_ZTIi)
|
|
; CHECK-NEXT: addi a1, a1, %lo(_ZTIi)
|
|
; CHECK-NEXT: li a2, 0
|
|
; CHECK-NEXT: call __cxa_throw@plt
|
|
entry:
|
|
%mul = mul i32 %x, %x
|
|
%add = add i32 %mul, 1
|
|
%exception = tail call i8* @__cxa_allocate_exception(i64 4)
|
|
%0 = bitcast i8* %exception to i32*
|
|
store i32 %add, i32* %0
|
|
tail call void @__cxa_throw(i8* %exception, i8* bitcast (i8** @_ZTIi to i8*), i8* null)
|
|
unreachable
|
|
}
|
|
|
|
@_ZTIi = external constant i8*
|
|
declare i8* @__cxa_allocate_exception(i64)
|
|
declare void @__cxa_throw(i8*, i8*, i8*)
|
|
|
|
attributes #0 = { minsize noreturn }
|