forked from OSchip/llvm-project
[NFC][SimplifyCFG] 'merge compatible invokes': tests w/ PHI's in landingpad
This commit is contained in:
Roman Lebedev
parent
a456ace9c1
commit
332d70cd45
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@ -622,9 +622,9 @@ if.end:
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ret void
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}
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; More interesting test, here we can merge the invokes.
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define void @t11_phi_in_landingpad() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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; CHECK-LABEL: @t11_phi_in_landingpad(
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; landingpad has PHI nodes, and the incoming values are incompatible.
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define void @t11_phi_in_landingpad_incompatible_incoming_values() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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; CHECK-LABEL: @t11_phi_in_landingpad_incompatible_incoming_values(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[C0:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[C0]], label [[IF_THEN0:%.*]], label [[IF_ELSE:%.*]]
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@ -793,8 +793,8 @@ if.end:
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}
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; There can be more than two invokes in a set
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define void @t14_three_invokes_only_two_compatible() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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; CHECK-LABEL: @t14_three_invokes_only_two_compatible(
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define void @t14_three_invokes() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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; CHECK-LABEL: @t14_three_invokes(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[C0:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[C0]], label [[IF_THEN2_INVOKE:%.*]], label [[IF_ELSE0:%.*]]
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@ -1346,6 +1346,171 @@ if.end:
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ret void
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}
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; landingpad has PHI nodes, and out of three invokes, only two have compatible incoming values.
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define void @t23_phi_in_landingpad_compatible_incoming_values() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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; CHECK-LABEL: @t23_phi_in_landingpad_compatible_incoming_values(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[C0:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[C0]], label [[IF_THEN0:%.*]], label [[IF_ELSE0:%.*]]
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; CHECK: if.then0:
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; CHECK-NEXT: invoke void @simple_throw()
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; CHECK-NEXT: to label [[INVOKE_CONT0:%.*]] unwind label [[LPAD:%.*]]
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; CHECK: invoke.cont0:
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; CHECK-NEXT: unreachable
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; CHECK: lpad:
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; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ 0, [[IF_THEN0]] ], [ 0, [[IF_THEN1:%.*]] ], [ -1, [[IF_THEN2:%.*]] ]
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; CHECK-NEXT: [[EH:%.*]] = landingpad { i8*, i32 }
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: call void @consume(i32 [[PHI]])
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; CHECK-NEXT: call void @destructor()
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; CHECK-NEXT: resume { i8*, i32 } [[EH]]
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; CHECK: if.else0:
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; CHECK-NEXT: [[C1:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[C1]], label [[IF_THEN1]], label [[IF_ELSE1:%.*]]
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; CHECK: if.then1:
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; CHECK-NEXT: invoke void @simple_throw()
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; CHECK-NEXT: to label [[INVOKE_CONT2:%.*]] unwind label [[LPAD]]
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; CHECK: invoke.cont2:
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; CHECK-NEXT: unreachable
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; CHECK: if.else1:
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; CHECK-NEXT: [[C2:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[C2]], label [[IF_THEN2]], label [[IF_END:%.*]]
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; CHECK: if.then2:
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; CHECK-NEXT: invoke void @simple_throw()
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; CHECK-NEXT: to label [[INVOKE_CONT3:%.*]] unwind label [[LPAD]]
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; CHECK: invoke.cont3:
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; CHECK-NEXT: unreachable
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; CHECK: if.end:
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; CHECK-NEXT: call void @sideeffect()
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; CHECK-NEXT: ret void
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;
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entry:
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%c0 = call i1 @cond()
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br i1 %c0, label %if.then0, label %if.else0
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if.then0:
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invoke void @simple_throw() to label %invoke.cont0 unwind label %lpad
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invoke.cont0:
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unreachable
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lpad:
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%phi = phi i32 [ 0, %if.then0 ], [ 0, %if.then1 ], [ -1, %if.then2 ]
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%eh = landingpad { i8*, i32 } cleanup
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call void @consume(i32 %phi)
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call void @destructor()
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resume { i8*, i32 } %eh
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if.else0:
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%c1 = call i1 @cond()
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br i1 %c1, label %if.then1, label %if.else1
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if.then1:
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invoke void @simple_throw() to label %invoke.cont2 unwind label %lpad
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invoke.cont2:
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unreachable
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if.else1:
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%c2 = call i1 @cond()
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br i1 %c2, label %if.then2, label %if.end
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if.then2:
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invoke void @simple_throw() to label %invoke.cont3 unwind label %lpad
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invoke.cont3:
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unreachable
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if.end:
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call void @sideeffect()
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ret void
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}
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; landingpad has two PHI nodes, but depending on which PHI you look,
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; the invoke sets would be different, so we can't merge invokes here.
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define void @t24_phi_in_landingpad_semi_compatible_incoming_values() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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; CHECK-LABEL: @t24_phi_in_landingpad_semi_compatible_incoming_values(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[C0:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[C0]], label [[IF_THEN0:%.*]], label [[IF_ELSE0:%.*]]
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; CHECK: if.then0:
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; CHECK-NEXT: invoke void @simple_throw()
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; CHECK-NEXT: to label [[INVOKE_CONT0:%.*]] unwind label [[LPAD:%.*]]
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; CHECK: invoke.cont0:
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; CHECK-NEXT: unreachable
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; CHECK: lpad:
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; CHECK-NEXT: [[PHI0:%.*]] = phi i32 [ 0, [[IF_THEN0]] ], [ 0, [[IF_THEN1:%.*]] ], [ -1, [[IF_THEN2:%.*]] ]
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; CHECK-NEXT: [[PHI1:%.*]] = phi i32 [ 0, [[IF_THEN0]] ], [ 1, [[IF_THEN1]] ], [ 1, [[IF_THEN2]] ]
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; CHECK-NEXT: [[EH:%.*]] = landingpad { i8*, i32 }
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: call void @consume(i32 [[PHI0]])
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; CHECK-NEXT: call void @consume(i32 [[PHI1]])
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; CHECK-NEXT: call void @destructor()
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; CHECK-NEXT: resume { i8*, i32 } [[EH]]
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; CHECK: if.else0:
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; CHECK-NEXT: [[C1:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[C1]], label [[IF_THEN1]], label [[IF_ELSE1:%.*]]
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; CHECK: if.then1:
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; CHECK-NEXT: invoke void @simple_throw()
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; CHECK-NEXT: to label [[INVOKE_CONT2:%.*]] unwind label [[LPAD]]
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; CHECK: invoke.cont2:
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; CHECK-NEXT: unreachable
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; CHECK: if.else1:
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; CHECK-NEXT: [[C2:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[C2]], label [[IF_THEN2]], label [[IF_END:%.*]]
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; CHECK: if.then2:
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; CHECK-NEXT: invoke void @simple_throw()
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; CHECK-NEXT: to label [[INVOKE_CONT3:%.*]] unwind label [[LPAD]]
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; CHECK: invoke.cont3:
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; CHECK-NEXT: unreachable
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; CHECK: if.end:
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; CHECK-NEXT: call void @sideeffect()
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; CHECK-NEXT: ret void
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;
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entry:
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%c0 = call i1 @cond()
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br i1 %c0, label %if.then0, label %if.else0
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if.then0:
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invoke void @simple_throw() to label %invoke.cont0 unwind label %lpad
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invoke.cont0:
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unreachable
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lpad:
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%phi0 = phi i32 [ 0, %if.then0 ], [ 0, %if.then1 ], [ -1, %if.then2 ]
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%phi1= phi i32 [ 0, %if.then0 ], [ 1, %if.then1 ], [ 1, %if.then2 ]
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%eh = landingpad { i8*, i32 } cleanup
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call void @consume(i32 %phi0)
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call void @consume(i32 %phi1)
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call void @destructor()
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resume { i8*, i32 } %eh
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if.else0:
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%c1 = call i1 @cond()
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br i1 %c1, label %if.then1, label %if.else1
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if.then1:
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invoke void @simple_throw() to label %invoke.cont2 unwind label %lpad
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invoke.cont2:
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unreachable
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if.else1:
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%c2 = call i1 @cond()
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br i1 %c2, label %if.then2, label %if.end
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if.then2:
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invoke void @simple_throw() to label %invoke.cont3 unwind label %lpad
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invoke.cont3:
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unreachable
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if.end:
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call void @sideeffect()
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ret void
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}
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declare i1 @cond()
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declare void @sideeffect()
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