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llvm-mirror/test/Transforms/SimplifyCFG/invoke.ll
Johannes Doerfert 4ce16022d3 [Local] Do not introduce a new llvm.trap before unreachable 
This is the second attempt to remove the `llvm.trap` insertion after
https://reviews.llvm.org/rGe14e7bc4b889dfaffb7180d176a03311df2d4ae6
reverted the first one. It is not clear what the exact issue was back
then and it might already be gone by now, it has been >5 years after
all.

Replaces D106299.

Differential Revision: https://reviews.llvm.org/D106308
2021-07-26 23:33:36 -05:00

196 lines
5.5 KiB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
declare i32 @__gxx_personality_v0(...)
declare void @__cxa_call_unexpected(i8*)
declare void @purefn() nounwind readnone
declare i32 @read_only() nounwind readonly
declare i32 @nounwind_fn() nounwind
declare i32 @fn()
define i8* @f1() nounwind uwtable ssp personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
; CHECK-LABEL: @f1(
; CHECK-NEXT: entry:
; CHECK-NEXT: unreachable
;
entry:
%call = invoke noalias i8* undef()
to label %invoke.cont unwind label %lpad
invoke.cont:
ret i8* %call
lpad:
%0 = landingpad { i8*, i32 }
filter [0 x i8*] zeroinitializer
%1 = extractvalue { i8*, i32 } %0, 0
tail call void @__cxa_call_unexpected(i8* %1) noreturn nounwind
unreachable
}
define i8* @f2() nounwind uwtable ssp personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
; CHECK-LABEL: @f2(
; CHECK-NEXT: entry:
; CHECK-NEXT: unreachable
;
entry:
%call = invoke noalias i8* null()
to label %invoke.cont unwind label %lpad
invoke.cont:
ret i8* %call
lpad:
%0 = landingpad { i8*, i32 }
filter [0 x i8*] zeroinitializer
%1 = extractvalue { i8*, i32 } %0, 0
tail call void @__cxa_call_unexpected(i8* %1) noreturn nounwind
unreachable
}
define i8* @f2_no_null_opt() nounwind uwtable ssp #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
; CHECK-LABEL: @f2_no_null_opt(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CALL:%.*]] = invoke noalias i8* null()
; CHECK-NEXT: to label [[INVOKE_CONT:%.*]] unwind label [[LPAD:%.*]]
; CHECK: invoke.cont:
; CHECK-NEXT: ret i8* [[CALL]]
; CHECK: lpad:
; CHECK-NEXT: [[TMP0:%.*]] = landingpad { i8*, i32 }
; CHECK-NEXT: filter [0 x i8*] zeroinitializer
; CHECK-NEXT: [[TMP1:%.*]] = extractvalue { i8*, i32 } [[TMP0]], 0
; CHECK-NEXT: tail call void @__cxa_call_unexpected(i8* [[TMP1]]) #[[ATTR5:[0-9]+]]
; CHECK-NEXT: unreachable
;
entry:
%call = invoke noalias i8* null()
to label %invoke.cont unwind label %lpad
invoke.cont:
ret i8* %call
lpad:
%0 = landingpad { i8*, i32 }
filter [0 x i8*] zeroinitializer
%1 = extractvalue { i8*, i32 } %0, 0
tail call void @__cxa_call_unexpected(i8* %1) noreturn nounwind
unreachable
}
define i32 @f3() nounwind uwtable ssp personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
; CHECK-LABEL: @f3(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i32 3
;
entry:
%call = invoke i32 @read_only()
to label %invoke.cont unwind label %lpad
invoke.cont:
ret i32 3
lpad:
%0 = landingpad { i8*, i32 }
filter [0 x i8*] zeroinitializer
%1 = extractvalue { i8*, i32 } %0, 0
tail call void @__cxa_call_unexpected(i8* %1) noreturn nounwind
unreachable
}
define i32 @f4() nounwind uwtable ssp personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
; CHECK-LABEL: @f4(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CALL:%.*]] = call i32 @read_only()
; CHECK-NEXT: ret i32 [[CALL]]
;
entry:
%call = invoke i32 @read_only()
to label %invoke.cont unwind label %lpad
invoke.cont:
ret i32 %call
lpad:
%0 = landingpad { i8*, i32 }
filter [0 x i8*] zeroinitializer
%1 = extractvalue { i8*, i32 } %0, 0
tail call void @__cxa_call_unexpected(i8* %1) noreturn nounwind
unreachable
}
define i32 @f5(i1 %cond, i8* %a, i8* %b) personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
; CHECK-LABEL: @f5(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND:%.*]], label [[X:%.*]], label [[Y:%.*]]
; CHECK: x:
; CHECK-NEXT: [[CALL:%.*]] = invoke i32 @fn()
; CHECK-NEXT: to label [[CONT:%.*]] unwind label [[LPAD:%.*]]
; CHECK: y:
; CHECK-NEXT: [[CALL2:%.*]] = call i32 @nounwind_fn()
; CHECK-NEXT: br label [[CONT]]
; CHECK: cont:
; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ [[CALL]], [[X]] ], [ [[CALL2]], [[Y]] ]
; CHECK-NEXT: ret i32 [[PHI]]
; CHECK: lpad:
; CHECK-NEXT: [[TMP0:%.*]] = landingpad { i8*, i32 }
; CHECK-NEXT: filter [0 x i8*] zeroinitializer
; CHECK-NEXT: tail call void @__cxa_call_unexpected(i8* [[A:%.*]]) #[[ATTR5]]
; CHECK-NEXT: unreachable
;
entry:
br i1 %cond, label %x, label %y
x:
%call = invoke i32 @fn()
to label %cont unwind label %lpad
y:
%call2 = invoke i32 @nounwind_fn()
to label %cont unwind label %lpad
cont:
%phi = phi i32 [%call, %x], [%call2, %y]
ret i32 %phi
lpad:
%phi2 = phi i8* [%a, %x], [%b, %y]
%0 = landingpad { i8*, i32 }
filter [0 x i8*] zeroinitializer
tail call void @__cxa_call_unexpected(i8* %phi2) noreturn nounwind
unreachable
}
define void @f6() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
; CHECK-LABEL: @f6(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[FOO:%.*]] = invoke i32 @fn()
; CHECK-NEXT: to label [[COMMON_RET:%.*]] unwind label [[LPAD:%.*]]
; CHECK: common.ret:
; CHECK-NEXT: ret void
; CHECK: lpad:
; CHECK-NEXT: [[TMP0:%.*]] = landingpad { i8*, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: br label [[COMMON_RET]]
;
entry:
invoke void @purefn()
to label %invoke.cont1 unwind label %lpad
invoke.cont1:
%foo = invoke i32 @fn()
to label %invoke.cont2 unwind label %lpad
invoke.cont2:
ret void
lpad:
%tmp = phi i8* [ null, %invoke.cont1 ], [ null, %entry ]
landingpad { i8*, i32 }
cleanup
ret void
}
attributes #0 = { null_pointer_is_valid }
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