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llvm-mirror/test/Transforms/Inline/deoptimize-intrinsic-attrs.ll
Serguei Katkov 0ce9cad66f [Inliner] Copy attributes when deoptimize intrinsic is inlined
During inlining of call-site with deoptimize intrinsic callee we miss
attributes set on this call site. As a result attributes like deopt-lowering are
disappeared resulting in inefficient behavior of register allocator in codegen.

Just copy attributes for deoptimize call like we do for others calls.

Reviewers: reames, apilipenko
Reviewed By: reames
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D102602
2021-05-18 10:08:37 +07:00

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677 B
LLVM

; RUN: opt -S -always-inline < %s | FileCheck %s
declare cc42 i32 @llvm.experimental.deoptimize.i32(...)
define i32 @callee_with_coldcc() alwaysinline {
%v0 = call cc42 i32(...) @llvm.experimental.deoptimize.i32(i32 1) #0 [ "deopt"() ]
ret i32 %v0
}
define void @caller_with_coldcc() {
; CHECK-LABEL: @caller_with_coldcc(
; CHECK-NEXT: call cc42 void (...) @llvm.experimental.deoptimize.isVoid(i32 1) #1 [ "deopt"() ]
; CHECK-NEXT: ret void
%val = call i32 @callee_with_coldcc()
ret void
}
attributes #0 = { "deopt-lowering"="live-in" }
; CHECK: declare cc42 void @llvm.experimental.deoptimize.isVoid(...)
; CHECK: attributes #1 = { "deopt-lowering"="live-in" }