llvm-project/llvm/test/CodeGen/X86/hoist-spill-lpad.ll

63 lines
2.6 KiB
LLVM

; RUN: llc < %s | FileCheck %s
;
; PR27612. The following spill is hoisted from two locations: the fall
; through succ block and the landingpad block of a call which may throw
; exception. If it is not hoisted before the call, the spill will be
; missing on the landingpad path.
;
; CHECK-LABEL: _Z3foov:
; CHECK: movq %rbx, (%rsp) # 8-byte Spill
; CHECK-NEXT: callq _Z3goov
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@a = dso_local global [20 x i64] zeroinitializer, align 16
@_ZTIi = external constant i8*
; Function Attrs: uwtable
define dso_local void @_Z3foov() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
entry:
%tmp = load i64, i64* getelementptr inbounds ([20 x i64], [20 x i64]* @a, i64 0, i64 1), align 8
invoke void @_Z3goov()
to label %try.cont unwind label %lpad
lpad: ; preds = %entry
%tmp1 = landingpad { i8*, i32 }
cleanup
catch i8* bitcast (i8** @_ZTIi to i8*)
%tmp2 = extractvalue { i8*, i32 } %tmp1, 1
%tmp3 = tail call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
%matches = icmp eq i32 %tmp2, %tmp3
br i1 %matches, label %catch, label %ehcleanup
catch: ; preds = %lpad
%tmp4 = extractvalue { i8*, i32 } %tmp1, 0
%tmp5 = tail call i8* @__cxa_begin_catch(i8* %tmp4)
store i64 %tmp, i64* getelementptr inbounds ([20 x i64], [20 x i64]* @a, i64 0, i64 2), align 16
tail call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{memory},~{dirflag},~{fpsr},~{flags}"()
store i64 %tmp, i64* getelementptr inbounds ([20 x i64], [20 x i64]* @a, i64 0, i64 3), align 8
tail call void @__cxa_end_catch()
br label %try.cont
try.cont: ; preds = %catch, %entry
store i64 %tmp, i64* getelementptr inbounds ([20 x i64], [20 x i64]* @a, i64 0, i64 4), align 16
tail call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{memory},~{dirflag},~{fpsr},~{flags}"()
store i64 %tmp, i64* getelementptr inbounds ([20 x i64], [20 x i64]* @a, i64 0, i64 5), align 8
ret void
ehcleanup: ; preds = %lpad
resume { i8*, i32 } %tmp1
}
declare void @_Z3goov()
declare i32 @__gxx_personality_v0(...)
; Function Attrs: nounwind readnone
declare i32 @llvm.eh.typeid.for(i8*)
declare i8* @__cxa_begin_catch(i8*)
declare void @__cxa_end_catch()