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| # RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
# This test ensures that the MIR parser parses the jump table info and jump
# table operands correctly.
--- |
define i32 @test_jumptable(i32 %in) {
entry:
switch i32 %in, label %def [
i32 0, label %lbl1
i32 1, label %lbl2
i32 2, label %lbl3
i32 3, label %lbl4
]
def:
ret i32 0
lbl1:
ret i32 1
lbl2:
ret i32 2
lbl3:
ret i32 4
lbl4:
ret i32 8
}
define i32 @test_jumptable2(i32 %in) {
entry:
switch i32 %in, label %def [
i32 0, label %lbl1
i32 1, label %lbl2
i32 2, label %lbl3
i32 3, label %lbl4
]
def:
ret i32 0
lbl1:
ret i32 1
lbl2:
ret i32 2
lbl3:
ret i32 4
lbl4:
ret i32 8
}
...
---
name: test_jumptable
# CHECK: jumpTable:
# CHECK-NEXT: kind: label-difference32
# CHECK-NEXT: entries:
# CHECK-NEXT: - id: 0
# CHECK-NEXT: blocks: [ '%bb.3', '%bb.4', '%bb.5', '%bb.6' ]
# CHECK-NEXT: body:
jumpTable:
kind: label-difference32
entries:
- id: 0
blocks: [ '%bb.3', '%bb.4', '%bb.5', '%bb.6' ]
body: |
bb.0.entry:
successors: %bb.2, %bb.1
$eax = MOV32rr $edi, implicit-def $rax
CMP32ri8 $edi, 3, implicit-def $eflags
JCC_1 %bb.2, 7, implicit $eflags
bb.1.entry:
successors: %bb.3, %bb.4, %bb.5, %bb.6
; CHECK: $rcx = LEA64r $rip, 1, $noreg, %jump-table.0, $noreg
$rcx = LEA64r $rip, 1, _, %jump-table.0, _
$rax = MOVSX64rm32 $rcx, 4, $rax, 0, _
$rax = ADD64rr $rax, $rcx, implicit-def $eflags
JMP64r $rax
bb.2.def:
$eax = MOV32r0 implicit-def $eflags
RETQ $eax
bb.3.lbl1:
$eax = MOV32ri 1
RETQ $eax
bb.4.lbl2:
$eax = MOV32ri 2
RETQ $eax
bb.5.lbl3:
$eax = MOV32ri 4
RETQ $eax
bb.6.lbl4:
$eax = MOV32ri 8
RETQ $eax
...
---
name: test_jumptable2
jumpTable:
kind: label-difference32
entries:
- id: 1
blocks: [ '%bb.3', '%bb.4', '%bb.5', '%bb.6' ]
body: |
bb.0.entry:
successors: %bb.2, %bb.1
$eax = MOV32rr $edi, implicit-def $rax
CMP32ri8 $edi, 3, implicit-def $eflags
JCC_1 %bb.2, 7, implicit $eflags
bb.1.entry:
successors: %bb.3, %bb.4, %bb.5, %bb.6
; Verify that the printer will use an id of 0 for this jump table:
; CHECK: $rcx = LEA64r $rip, 1, $noreg, %jump-table.0, $noreg
$rcx = LEA64r $rip, 1, _, %jump-table.1, _
$rax = MOVSX64rm32 $rcx, 4, $rax, 0, _
$rax = ADD64rr $rax, $rcx, implicit-def $eflags
JMP64r $rax
bb.2.def:
$eax = MOV32r0 implicit-def $eflags
RETQ $eax
bb.3.lbl1:
$eax = MOV32ri 1
RETQ $eax
bb.4.lbl2:
$eax = MOV32ri 2
RETQ $eax
bb.5.lbl3:
$eax = MOV32ri 4
RETQ $eax
bb.6.lbl4:
$eax = MOV32ri 8
RETQ $eax
...
|