2020-02-14 02:08:05 +08:00
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# RUN: not llc -march=amdgcn -run-pass=legalizer -o /dev/null %s 2>&1 | FileCheck %s
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2019-09-10 04:55:49 +08:00
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# CHECK: LLVM ERROR: unable to legalize instruction: %3:_(p0) = G_JUMP_TABLE %jump-table.0 (in function: jt_test)
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# FIXME: This could probably be smaller, but the jump table MIR parsing is very crashy.
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--- |
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define i32 @jt_test(i32 %x) {
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entry:
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switch i32 %x, label %return [
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i32 75, label %sw.bb
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i32 34, label %sw.bb
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i32 56, label %sw.bb
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i32 35, label %sw.bb
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i32 40, label %sw.bb
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i32 4, label %sw.bb1
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i32 5, label %sw.bb1
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i32 6, label %sw.bb1
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]
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sw.bb: ; preds = %entry, %entry, %entry, %entry, %entry
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%add = add nsw i32 %x, 42
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br label %return
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sw.bb1: ; preds = %entry, %entry, %entry
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%mul = mul nsw i32 %x, 3
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br label %return
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return: ; preds = %sw.bb1, %sw.bb, %entry
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%retval.0 = phi i32 [ %mul, %sw.bb1 ], [ %add, %sw.bb ], [ 0, %entry ]
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ret i32 %retval.0
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}
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...
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---
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name: jt_test
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tracksRegLiveness: true
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jumpTable:
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kind: block-address
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entries:
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- id: 0
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blocks: [ '%bb.3', '%bb.3', '%bb.3', '%bb.4', '%bb.4', '%bb.4',
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'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
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'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
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'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
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'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
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'%bb.2', '%bb.2', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
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'%bb.2', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
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'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
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'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.2', '%bb.4',
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'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
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'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
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'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.2' ]
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body: |
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bb.0.entry:
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liveins: $sgpr0
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%0:_(s32) = COPY $sgpr0
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%1:_(s32) = G_CONSTANT i32 0
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%2:_(s1) = G_ICMP intpred(ugt), %0, %1
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%3:_(p0) = G_JUMP_TABLE %jump-table.0
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S_NOP 0, implicit %3
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G_BRCOND %2, %bb.4
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bb.1.entry:
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successors: %bb.3(0x2aaaaaab), %bb.4(0x2aaaaaab), %bb.2(0x2aaaaaab)
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G_BR %bb.4
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bb.2.sw.bb:
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G_BR %bb.4
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bb.3.sw.bb1:
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bb.4.return:
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S_ENDPGM 0
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...
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