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https://github.com/c64scene-ar/llvm-6502.git
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a7e2ef7e6e
through an invoke instruction. The original patch for this was written by Mark Seaborn, but I've reworked his test case into the existing returns_twice test case and implemented the fix by the prior refactoring to actually run the cost analysis over invoke instructions, and then here fixing our detection of the returns_twice attribute to work for both calls and invokes. We never noticed because we never saw an invoke. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197216 91177308-0d34-0410-b5e6-96231b3b80d8
85 lines
1.6 KiB
LLVM
85 lines
1.6 KiB
LLVM
; RUN: opt < %s -inline -S | FileCheck %s
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; Check that functions with "returns_twice" calls are only inlined,
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; if they are themselves marked as such.
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declare i32 @a() returns_twice
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define i32 @inner1() {
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entry:
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%call = call i32 @a() returns_twice
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%add = add nsw i32 1, %call
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ret i32 %add
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}
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define i32 @outer1() {
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entry:
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; CHECK-LABEL: define i32 @outer1(
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; CHECK: call i32 @inner1()
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%call = call i32 @inner1()
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%add = add nsw i32 1, %call
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ret i32 %add
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}
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define i32 @inner2() returns_twice {
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entry:
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%call = call i32 @a() returns_twice
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%add = add nsw i32 1, %call
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ret i32 %add
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}
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define i32 @outer2() {
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entry:
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; CHECK-LABEL: define i32 @outer2(
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; CHECK: call i32 @a()
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%call = call i32 @inner2() returns_twice
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%add = add nsw i32 1, %call
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ret i32 %add
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}
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define i32 @inner3() {
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entry:
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%invoke = invoke i32 @a() returns_twice
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to label %cont unwind label %lpad
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cont:
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%add = add nsw i32 1, %invoke
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ret i32 %add
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lpad:
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%lp = landingpad i32 personality i8* null cleanup
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resume i32 %lp
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}
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define i32 @outer3() {
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entry:
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; CHECK-LABEL: define i32 @outer3(
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; CHECK: call i32 @inner3()
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%call = call i32 @inner3()
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%add = add nsw i32 1, %call
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ret i32 %add
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}
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define i32 @inner4() returns_twice {
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entry:
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%invoke = invoke i32 @a() returns_twice
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to label %cont unwind label %lpad
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cont:
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%add = add nsw i32 1, %invoke
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ret i32 %add
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lpad:
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%lp = landingpad i32 personality i8* null cleanup
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resume i32 %lp
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}
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define i32 @outer4() {
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entry:
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; CHECK-LABEL: define i32 @outer4(
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; CHECK: invoke i32 @a()
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%call = call i32 @inner4() returns_twice
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%add = add nsw i32 1, %call
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ret i32 %add
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}
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