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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

70 lines
1.9 KiB
LLVM

; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers | FileCheck %s
; This tests that indirectbr instructions are lowered to switches. Currently we
; just re-use the IndirectBrExpand Pass; it has its own IR-level test.
; So this test just ensures that the pass gets run and we can lower indirectbr
target triple = "wasm32"
@test1.targets = constant [4 x ptr] [ptr blockaddress(@test1, %bb0),
ptr blockaddress(@test1, %bb1),
ptr blockaddress(@test1, %bb2),
ptr blockaddress(@test1, %bb3)]
; Just check the barest skeleton of the structure
; CHECK-LABEL: test1:
; CHECK: i32.load
; CHECK: i32.load
; CHECK: loop
; CHECK: block
; CHECK: block
; CHECK: block
; CHECK: block
; CHECK: br_table ${{[^,]+}}, 1, 2, 0
; CHECK: end_block
; CHECK: end_block
; CHECK: end_block
; CHECK: end_block
; CHECK: br
; CHECK: end_loop
; CHECK: end_function
; CHECK: test1.targets:
; CHECK-NEXT: .int32
; CHECK-NEXT: .int32
; CHECK-NEXT: .int32
; CHECK-NEXT: .int32
define void @test1(ptr readonly %p, ptr %sink) #0 {
entry:
%i0 = load i32, ptr %p
%target.i0 = getelementptr [4 x ptr], ptr @test1.targets, i32 0, i32 %i0
%target0 = load ptr, ptr %target.i0
; Only a subset of blocks are viable successors here.
indirectbr ptr %target0, [label %bb0, label %bb1]
bb0:
store volatile i32 0, ptr %sink
br label %latch
bb1:
store volatile i32 1, ptr %sink
br label %latch
bb2:
store volatile i32 2, ptr %sink
br label %latch
bb3:
store volatile i32 3, ptr %sink
br label %latch
latch:
%i.next = load i32, ptr %p
%target.i.next = getelementptr [4 x ptr], ptr @test1.targets, i32 0, i32 %i.next
%target.next = load ptr, ptr %target.i.next
; A different subset of blocks are viable successors here.
indirectbr ptr %target.next, [label %bb1, label %bb2]
}