Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/llvm/test/Transforms/PruneEH/2008-06-02-Weak.ll

@@ -0,0 +1,12 @@
+; RUN: opt < %s -prune-eh -S | not grep nounwind
+
+define weak void @f() {
+entry:
+        ret void
+}
+
+define void @g() {
+entry:
+	call void @f()
+	ret void
+}

external/llvm-project/llvm/test/Transforms/PruneEH/ipo-nounwind.ll

@@ -0,0 +1,43 @@
+; RUN: opt -S -prune-eh < %s | FileCheck %s
+
+declare void @may_throw()
+
+; @callee below may be an optimized form of this function, which can
+; throw at runtime (see r265762 for more details):
+; 
+; define linkonce_odr void @callee(i32* %ptr) noinline {
+; entry:
+;   %val0 = load atomic i32, i32* %ptr unordered, align 4
+;   %val1 = load atomic i32, i32* %ptr unordered, align 4
+;   %cmp = icmp eq i32 %val0, %val1
+;   br i1 %cmp, label %left, label %right
+
+; left:
+;   ret void
+
+; right:
+;   call void @may_throw()
+;   ret void
+; }
+
+define linkonce_odr void @callee(i32* %ptr) noinline {
+  ret void
+}
+
+define i32 @caller(i32* %ptr) personality i32 3 {
+; CHECK-LABEL: @caller(
+; CHECK:  invoke void @callee(i32* %ptr)
+; CHECK-NEXT:          to label %normal unwind label %unwind
+
+entry:
+  invoke void @callee(i32* %ptr)
+          to label %normal unwind label %unwind
+
+normal:
+  ret i32 1
+
+unwind:
+  %res = landingpad { i8*, i32 }
+         cleanup
+  ret i32 2
+}

external/llvm-project/llvm/test/Transforms/PruneEH/operand-bundles.ll

@@ -0,0 +1,26 @@
+; RUN: opt < %s -prune-eh -S | FileCheck %s
+
+declare void @nounwind() nounwind
+
+define internal void @foo() {
+	call void @nounwind()
+	ret void
+}
+
+define i32 @caller() personality i32 (...)* @__gxx_personality_v0 {
+; CHECK-LABEL: @caller(
+; CHECK-NOT: invoke
+; CHECK: call void @foo() [ "foo"(i32 0, i8 1) ]
+	invoke void @foo() [ "foo"(i32 0, i8 1) ]
+			to label %Normal unwind label %Except
+
+Normal:		; preds = %0
+	ret i32 0
+
+Except:		; preds = %0
+        landingpad { i8*, i32 }
+                catch i8* null
+	ret i32 1
+}
+
+declare i32 @__gxx_personality_v0(...)

external/llvm-project/llvm/test/Transforms/PruneEH/pr23971.ll

@@ -0,0 +1,21 @@
+; RUN: opt -S -prune-eh < %s | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define void @f() #0 {
+entry:
+  call void asm sideeffect "ret\0A\09", "~{dirflag},~{fpsr},~{flags}"()
+  unreachable
+}
+
+define i32 @g() {
+entry:
+  call void @f()
+  ret i32 42
+}
+
+; CHECK-LABEL: define i32 @g()
+; CHECK: ret i32 42
+
+attributes #0 = { naked noinline }

external/llvm-project/llvm/test/Transforms/PruneEH/pr26263.ll

@@ -0,0 +1,56 @@
+; RUN: opt -prune-eh -S < %s | FileCheck %s
+target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
+target triple = "i386-pc-windows-msvc"
+
+declare void @neverthrows() nounwind
+
+define void @test1() personality i32 (...)* @__CxxFrameHandler3 {
+  invoke void @neverthrows()
+          to label %try.cont unwind label %cleanuppad
+
+try.cont:
+  ret void
+
+cleanuppad:
+  %cp = cleanuppad within none []
+  br label %cleanupret
+
+cleanupret:
+  cleanupret from %cp unwind to caller
+}
+
+; CHECK-LABEL: define void @test1(
+; CHECK: call void @neverthrows()
+
+; CHECK: %[[cp:.*]] = cleanuppad within none []
+; CHECK-NEXT: unreachable
+
+; CHECK: cleanupret from %[[cp]] unwind to caller
+
+define void @test2() personality i32 (...)* @__CxxFrameHandler3 {
+  invoke void @neverthrows()
+          to label %try.cont unwind label %catchswitch
+
+try.cont:
+  ret void
+
+catchswitch:
+  %cs = catchswitch within none [label %catchpad] unwind to caller
+
+catchpad:
+  %cp = catchpad within %cs []
+  unreachable
+
+ret:
+  ret void
+}
+
+; CHECK-LABEL: define void @test2(
+; CHECK: call void @neverthrows()
+
+; CHECK: %[[cs:.*]] = catchswitch within none [label
+
+; CHECK: catchpad within %[[cs]] []
+; CHECK-NEXT: unreachable
+
+declare i32 @__CxxFrameHandler3(...)

external/llvm-project/llvm/test/Transforms/PruneEH/recursivetest.ll

@@ -0,0 +1,25 @@
+; RUN: opt < %s -prune-eh -S | not grep invoke
+
+define internal i32 @foo() personality i32 (...)* @__gxx_personality_v0 {
+	invoke i32 @foo( )
+			to label %Normal unwind label %Except		; <i32>:1 [#uses=0]
+Normal:		; preds = %0
+	ret i32 12
+Except:		; preds = %0
+        landingpad { i8*, i32 }
+                catch i8* null
+	ret i32 123
+}
+
+define i32 @caller() personality i32 (...)* @__gxx_personality_v0 {
+	invoke i32 @foo( )
+			to label %Normal unwind label %Except		; <i32>:1 [#uses=0]
+Normal:		; preds = %0
+	ret i32 0
+Except:		; preds = %0
+        landingpad { i8*, i32 }
+                catch i8* null
+	ret i32 1
+}
+
+declare i32 @__gxx_personality_v0(...)

external/llvm-project/llvm/test/Transforms/PruneEH/seh-nounwind.ll

@@ -0,0 +1,31 @@
+; RUN: opt -S -prune-eh < %s | FileCheck %s
+
+; Don't remove invokes of nounwind functions if the personality handles async
+; exceptions. The @div function in this test can fault, even though it can't
+; throw a synchronous exception.
+
+define i32 @div(i32 %n, i32 %d) nounwind {
+entry:
+  %div = sdiv i32 %n, %d
+  ret i32 %div
+}
+
+define i32 @main() nounwind personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*) {
+entry:
+  %call = invoke i32 @div(i32 10, i32 0)
+          to label %__try.cont unwind label %lpad
+
+lpad:
+  %0 = landingpad { i8*, i32 }
+          catch i8* null
+  br label %__try.cont
+
+__try.cont:
+  %retval.0 = phi i32 [ %call, %entry ], [ 0, %lpad ]
+  ret i32 %retval.0
+}
+
+; CHECK-LABEL: define i32 @main()
+; CHECK: invoke i32 @div(i32 10, i32 0)
+
+declare i32 @__C_specific_handler(...)

external/llvm-project/llvm/test/Transforms/PruneEH/simplenoreturntest.ll

@@ -0,0 +1,13 @@
+; RUN: opt < %s -prune-eh -S | not grep "ret i32"
+
+declare void @noreturn() noreturn
+
+define i32 @caller() {
+	call void @noreturn( )
+	ret i32 17
+}
+
+define i32 @caller2() {
+	%T = call i32 @caller( )		; <i32> [#uses=1]
+	ret i32 %T
+}

external/llvm-project/llvm/test/Transforms/PruneEH/simpletest.ll

@@ -0,0 +1,23 @@
+; RUN: opt < %s -prune-eh -S | not grep invoke
+
+declare void @nounwind() nounwind
+
+define internal void @foo() {
+	call void @nounwind()
+	ret void
+}
+
+define i32 @caller() personality i32 (...)* @__gxx_personality_v0 {
+	invoke void @foo( )
+			to label %Normal unwind label %Except
+
+Normal:		; preds = %0
+	ret i32 0
+
+Except:		; preds = %0
+        landingpad { i8*, i32 }
+                catch i8* null
+	ret i32 1
+}
+
+declare i32 @__gxx_personality_v0(...)