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TheRock/compiler/amd-llvm/mlir/test/Target/LLVMIR/Import/indirectbr.ll
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derek.holloway 7502bf64a4
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2026-09-02 16:34:47 -07:00

87 lines
2.6 KiB
LLVM

; RUN: mlir-translate --import-llvm %s -split-input-file | FileCheck %s
; CHECK: llvm.func @basic(%[[arg0:.*]]: !llvm.ptr)
define i32 @basic(ptr %dst) {
; CHECK: llvm.indirectbr %[[arg0]] : !llvm.ptr, [
; CHECK: ^[[bb1:.*]],
; CHECK: ^[[bb2:.*]]
; CHECK: ]
indirectbr ptr %dst, [label %bb1, label %bb2]
bb1:
; CHECK: ^[[bb1]]:
; CHECK: llvm.return
ret i32 0
bb2:
; CHECK: ^[[bb2]]:
; CHECK: llvm.return
ret i32 1
}
; // -----
; CHECK: llvm.mlir.global external @addr()
@addr = global ptr null
; CHECK-LABEL: llvm.func @test_indirectbr() {
define void @test_indirectbr() {
; CHECK: %[[BA:.*]] = llvm.blockaddress <function = @test_indirectbr, tag = <id = 1>> : !llvm.ptr
; CHECK: {{.*}} = llvm.mlir.addressof @addr : !llvm.ptr
; CHECK: llvm.store %[[BA]], {{.*}} : !llvm.ptr, !llvm.ptr
store ptr blockaddress(@test_indirectbr, %block), ptr @addr
; CHECK: %[[TARGET_ADDR:.*]] = llvm.load {{.*}} : !llvm.ptr -> !llvm.ptr
%val = load ptr, ptr @addr
; CHECK: llvm.indirectbr %[[TARGET_ADDR]] : !llvm.ptr, [
; CHECK: ^[[TARGET_BB:.*]]
; CHECK: ]
indirectbr ptr %val, [label %block]
; CHECK: ^[[TARGET_BB]]:
; CHECK: llvm.blocktag <id = 1>
; CHECK: llvm.return
; CHECK: }
block:
ret void
}
; // -----
; CHECK: llvm.func @callee(!llvm.ptr, i32, i32) -> i32
declare i32 @callee(ptr %a, i32 %v, i32 %p)
; CHECK: llvm.func @test_indirectbr_phi(
; CHECK-SAME: %arg0: !llvm.ptr, %arg1: !llvm.ptr, %arg2: !llvm.ptr, %arg3: i32) -> i32 {
define i32 @test_indirectbr_phi(ptr %address, ptr %a, ptr %b, i32 %v) {
entry:
; CHECK: %[[ONE:.*]] = llvm.mlir.constant(1 : i32) : i32
; CHECK: %[[TWO:.*]] = llvm.mlir.constant(2 : i32) : i32
%dest = select i1 poison, ptr blockaddress(@test_indirectbr_phi, %end), ptr %address
; CHECK: llvm.indirectbr {{.*}} : !llvm.ptr, [
; CHECK: ^[[HEAD_BB:.*]],
; CHECK: ^[[TAIL_BB:.*]](%[[ONE]] : i32)
; CHECK: ]
indirectbr ptr %dest, [label %head, label %tail]
head:
; CHECK: ^[[HEAD_BB]]:
; CHECK: llvm.indirectbr {{.*}} : !llvm.ptr, [
; CHECK: ^[[TAIL_BB]](%[[TWO]] : i32),
; CHECK: ^[[END_BB:.*]]
; CHECK: ]
%dest2 = select i1 poison, ptr blockaddress(@test_indirectbr_phi, %end), ptr %address
indirectbr ptr %dest2, [label %tail, label %end]
tail:
; CHECK: ^[[TAIL_BB]](%[[BLOCK_ARG:.*]]: i32):
; CHECK: {{.*}} = llvm.call @callee({{.*}}, %[[BLOCK_ARG]])
; CHECK: llvm.return
%p = phi i32 [1, %entry], [2, %head]
%r = call i32 @callee(ptr %a, i32 %v, i32 %p)
ret i32 %r
end:
; CHECK: ^[[END_BB]]:
; CHECK: llvm.blocktag
; CHECK: llvm.return
; CHECK: }
ret i32 %v
}