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TheRock/compiler/amd-llvm/llvm/test/CodeGen/X86/basic-block-sections-cloning-indirect.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

44 lines
1.4 KiB
LLVM

;; Test for cloning a path ending with indirect branch with -basic-block-sections.
declare void @effect(i32 zeroext)
;; Test valid application of cloning for a path with indirect branch.
; RUN: echo 'v1' > %t
; RUN: echo 'f bar' >> %t
; RUN: echo 'p 0 1' >> %t
; RUN: echo 'c 0 1.1 2 1' >> %t
; RUN: llc < %s -mtriple=x86_64-pc-linux -O0 -function-sections -basic-block-sections=%t | FileCheck %s
define void @bar(i1 %a, i1 %b) {
b0:
call void @effect(i32 0)
br i1 %a, label %b1, label %b2
b1: ; preds = %b0
call void @effect(i32 1)
%0 = select i1 %b, ; <ptr> [#uses=1]
ptr blockaddress(@bar, %b2),
ptr blockaddress(@bar, %b3)
indirectbr ptr %0, [label %b2, label %b3]
b2: ; preds = %b0, %b1
call void @effect(i32 2)
ret void
b3:
call void @effect(i32 3) ; preds = %b1
ret void
}
; CHECK: .section .text.bar,"ax",@progbits
; CHECK: bar:
; CHECK: # %bb.0: # %b0
; CHECK: je .LBB0_2
; CHECK-NEXT: # %bb.4: # %b1
; CHECK: jmpq *%rax
; CHECK-NEXT: .Ltmp0: # Block address taken
; CHECK-NEXT: .LBB0_2: # %b2
; CHECK: retq
; CHECK-NEXT: # %bb.1: # %b1
; CHECK: jmpq *%rax
; CHECK: .section .text.split.bar,"ax",@progbits
; CHECK: bar.cold: # %b3