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TheRock/compiler/amd-llvm/llvm/test/Transforms/HotColdSplit/musttail.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

54 lines
1.4 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes=hotcoldsplit -hotcoldsplit-threshold=0 -S < %s | FileCheck %s
; musttail calls can't be outlined, because they have several restrictions
; enforcing matching calling conventions between the parent and callee.
define void @test_musttail(i1 %b) {
; CHECK-LABEL: define void @test_musttail(
; CHECK-SAME: i1 [[B:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: br i1 [[B]], label %[[IF_THEN:.*]], label %[[IF_ELSE:.*]]
; CHECK: [[IF_THEN]]:
; CHECK-NEXT: ret void
; CHECK: [[IF_ELSE]]:
; CHECK-NEXT: musttail call void @target(i1 [[B]])
; CHECK-NEXT: ret void
;
entry:
br i1 %b, label %if.then, label %if.else
if.then:
ret void
if.else:
musttail call void @target(i1 %b)
ret void
}
define void @test_tail(i1 %b) {
; CHECK-LABEL: define void @test_tail(
; CHECK-SAME: i1 [[B:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: br i1 [[B]], label %[[IF_THEN:.*]], label %[[CODEREPL:.*]]
; CHECK: [[IF_THEN]]:
; CHECK-NEXT: ret void
; CHECK: [[CODEREPL]]:
; CHECK-NEXT: call void @test_tail.cold.1(i1 [[B]]) #[[ATTR2:[0-9]+]]
; CHECK-NEXT: br label %[[IF_ELSE_RET:.*]]
; CHECK: [[IF_ELSE_RET]]:
; CHECK-NEXT: ret void
;
entry:
br i1 %b, label %if.then, label %if.else
if.then:
ret void
if.else:
tail call void @target(i1 %b)
ret void
}
declare void @target() cold