forked from OSchip/llvm-project
53 lines
1.2 KiB
Plaintext
53 lines
1.2 KiB
Plaintext
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# RUN: llc -mtriple=arm-apple-ios -run-pass=if-converter %s -o - | FileCheck %s
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--- |
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declare void @__stack_chk_fail()
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declare void @bar()
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define void @foo() {
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ret void
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}
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...
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---
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name: foo
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body: |
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bb.0:
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Bcc %bb.1, 1, %cpsr
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B %bb.2
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bb.1:
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Bcc %bb.3, 0, %cpsr
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bb.2:
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successors:
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tBL 14, %cpsr, @__stack_chk_fail
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bb.3:
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successors:
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%sp = tADDspi %sp, 2, 14, _
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%sp = tADDspi %sp, 2, 14, _
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tTAILJMPdND @bar, 14, %cpsr
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...
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# bb.2 has no successors, presumably because __stack_chk_fail doesn't return,
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# so there should be no edge from bb.2 to bb.3.
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# Nevertheless, IfConversion treats bb.1, bb.2, bb.3 as a triangle and
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# inserts a predicated copy of bb.2 in bb.1.
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# This caused r302876 to die with a failed assertion.
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# CHECK: bb.0:
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# CHECK: successors: %bb.2(0x40000000), %bb.1(0x40000000)
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# CHECK: Bcc %bb.2, 1, %cpsr
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# CHECK: bb.1:
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# CHECK-NOT: successors: %bb
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# CHECK: tBL 14, %cpsr, @__stack_chk_fail
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# CHECK: bb.2:
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# CHECK-NOT: successors: %bb
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# CHECK: tBL 1, %cpsr, @__stack_chk_fail
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# CHECK: %sp = tADDspi %sp, 2, 14, %noreg
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# CHECK: %sp = tADDspi %sp, 2, 14, %noreg
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# CHECK: tTAILJMPdND @bar, 14, %cpsr
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