derek.holloway
7502bf64a4
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57 lines
1.8 KiB
LLVM
57 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc -mattr=+zcmp -verify-machineinstrs \
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; RUN: -mtriple=riscv32 -target-abi=ilp32 < %s \
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; RUN: | FileCheck %s -check-prefixes=RV32IZCMP
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; RUN: llc -mattr=+zcmp -verify-machineinstrs \
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; RUN: -mtriple=riscv64 -target-abi=lp64 < %s \
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; RUN: | FileCheck %s -check-prefixes=RV64IZCMP
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; This source code exposed a crash in the RISC-V Zcmp Push/Pop optimization
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; pass. The root cause was: Not doing a bounds check before using a returned
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; iterator.
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declare dso_local void @f1() local_unnamed_addr
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declare dso_local void @f2() local_unnamed_addr
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define dso_local void @f0(i1 %c) local_unnamed_addr {
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; RV32IZCMP-LABEL: f0:
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; RV32IZCMP: # %bb.0: # %entry
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; RV32IZCMP-NEXT: andi a0, a0, 1
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; RV32IZCMP-NEXT: beqz a0, .LBB0_2
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; RV32IZCMP-NEXT: # %bb.1: # %if.T
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; RV32IZCMP-NEXT: cm.push {ra}, -16
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; RV32IZCMP-NEXT: .cfi_def_cfa_offset 16
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; RV32IZCMP-NEXT: .cfi_offset ra, -4
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; RV32IZCMP-NEXT: call f1
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; RV32IZCMP-NEXT: cm.pop {ra}, 16
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; RV32IZCMP-NEXT: .cfi_restore ra
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; RV32IZCMP-NEXT: .cfi_def_cfa_offset 0
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; RV32IZCMP-NEXT: .LBB0_2: # %if.F
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; RV32IZCMP-NEXT: tail f2
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;
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; RV64IZCMP-LABEL: f0:
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; RV64IZCMP: # %bb.0: # %entry
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; RV64IZCMP-NEXT: andi a0, a0, 1
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; RV64IZCMP-NEXT: beqz a0, .LBB0_2
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; RV64IZCMP-NEXT: # %bb.1: # %if.T
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; RV64IZCMP-NEXT: cm.push {ra}, -16
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; RV64IZCMP-NEXT: .cfi_def_cfa_offset 16
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; RV64IZCMP-NEXT: .cfi_offset ra, -8
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; RV64IZCMP-NEXT: call f1
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; RV64IZCMP-NEXT: cm.pop {ra}, 16
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; RV64IZCMP-NEXT: .cfi_restore ra
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; RV64IZCMP-NEXT: .cfi_def_cfa_offset 0
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; RV64IZCMP-NEXT: .LBB0_2: # %if.F
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; RV64IZCMP-NEXT: tail f2
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entry:
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br i1 %c, label %if.T, label %if.F
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if.T:
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tail call void @f1()
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br label %if.F
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if.F:
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tail call void @f2()
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ret void
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}
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