[RISCV] Precommit test for D122634

[• pcwang-thead]

Add test for position instructions and CFI.

[luismarques]

LGTM. Don't forget to fix the typo before committing.

llvm/test/CodeGen/RISCV/machine-outliner-position.mir

8 ↗

(On Diff #423045)

instructions

[• pcwang-thead]

Rebase and fix typo.

[jrtc27]

https://llvm.org/docs/DeveloperPolicy.html:

• The commit message for the reverting commit should explain why patch is being reverted.

Why was the commit reverted?

[• pcwang-thead]

In D123364#3464500, @jrtc27 wrote:

https://llvm.org/docs/DeveloperPolicy.html:

• The commit message for the reverting commit should explain why patch is being reverted.

Why was the commit reverted?

Sorry. This patch caused some errors because there was no nounwind attr in machine-outliner-cfi.mir.

I will add the reason when I recommit it.

[• pcwang-thead]

Add nounwind attr to machine-outliner-cfi.mir.

llvm/test/CodeGen/RISCV/machine-outliner-throw.ll

+; 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
+
+define i32 @func1(i32 %x) #0 {
+; CHECK-LABEL: func1:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    call t0, OUTLINED_FUNCTION_0
+; 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:    call t0, OUTLINED_FUNCTION_0
+; 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
+}
+
+; CHECK-LABEL: OUTLINED_FUNCTION_0:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    addi sp, sp, -16
+; CHECK-NEXT:    sd ra, 8(sp)
+; CHECK-NEXT:    sd s0, 0(sp)
+; CHECK-NEXT:    mulw a0, a0, a0
+; CHECK-NEXT:    addiw s0, a0, 1
+; CHECK-NEXT:    li a0, 4
+
+@_ZTIi = external constant i8*
+declare i8* @__cxa_allocate_exception(i64)
+declare void @__cxa_throw(i8*, i8*, i8*)
+
+attributes #0 = { minsize noreturn }