derek.holloway
7502bf64a4
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73 lines
2.0 KiB
LLVM
73 lines
2.0 KiB
LLVM
; RUN: llc -mtriple=hexagon -enable-save-restore-long -hexagon-initial-cfg-cleanup=0 < %s | FileCheck %s
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; Check that the -long-calls feature is supported by the backend.
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; CHECK: call ##foo
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; CHECK: jump ##__restore
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define i64 @test_longcall(i32 %x, i32 %y) #0 {
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entry:
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%add = add nsw i32 %x, 5
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%call = tail call i64 @foo(i32 %add) #1
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%conv = sext i32 %y to i64
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%add1 = add nsw i64 %call, %conv
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ret i64 %add1
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}
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; CHECK: jump ##foo
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define i64 @test_longtailcall(i32 %x, i32 %y) #1 {
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entry:
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%add = add nsw i32 %x, 5
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%call = tail call i64 @foo(i32 %add) #1
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ret i64 %call
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}
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; CHECK: call ##bar
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define i64 @test_longnoret(i32 %x, i32 %y) #2 {
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entry:
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%add = add nsw i32 %x, 5
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%0 = tail call i64 @bar(i32 %add) #6
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unreachable
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}
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; CHECK: call foo
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; CHECK: jump ##__restore
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; The restore call will still be long because of the enable-save-restore-long
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; option being used.
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define i64 @test_shortcall(i32 %x, i32 %y) #3 {
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entry:
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%add = add nsw i32 %x, 5
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%call = tail call i64 @foo(i32 %add) #1
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%conv = sext i32 %y to i64
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%add1 = add nsw i64 %call, %conv
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ret i64 %add1
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}
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; CHECK: jump foo
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define i64 @test_shorttailcall(i32 %x, i32 %y) #4 {
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entry:
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%add = add nsw i32 %x, 5
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%call = tail call i64 @foo(i32 %add) #1
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ret i64 %call
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}
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; CHECK: call bar
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define i64 @test_shortnoret(i32 %x, i32 %y) #5 {
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entry:
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%add = add nsw i32 %x, 5
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%0 = tail call i64 @bar(i32 %add) #6
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unreachable
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}
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declare i64 @foo(i32) #1
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declare i64 @bar(i32) #6
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attributes #0 = { minsize nounwind "target-cpu"="hexagonv60" "target-features"="+long-calls" }
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attributes #1 = { nounwind "target-cpu"="hexagonv60" "target-features"="+long-calls" }
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attributes #2 = { noreturn nounwind "target-cpu"="hexagonv60" "target-features"="+long-calls" }
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attributes #3 = { minsize nounwind "target-cpu"="hexagonv60" "target-features"="-long-calls" }
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attributes #4 = { nounwind "target-cpu"="hexagonv60" "target-features"="-long-calls" }
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attributes #5 = { noreturn nounwind "target-cpu"="hexagonv60" "target-features"="-long-calls" }
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attributes #6 = { noreturn nounwind "target-cpu"="hexagonv60" }
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