derek.holloway
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83 lines
2.6 KiB
LLVM
83 lines
2.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
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; RUN: llc -mtriple=riscv32 -mattr=+m,+zcmp -verify-machineinstrs < %s | FileCheck %s --check-prefix=ZCMP
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; RUN: llc -mtriple=riscv32 -mattr=+m,+xqccmp -verify-machineinstrs < %s | FileCheck %s --check-prefix=XQCCMP
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; RUN: llc -mtriple=riscv32 -mattr=+m,+zcmp,+experimental-p -verify-machineinstrs < %s | FileCheck %s --check-prefix=ZCMP-P
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; RUN: llc -mtriple=riscv64 -mattr=+m,+zcmp,+experimental-p -verify-machineinstrs < %s | FileCheck %s --check-prefix=ZCMP-P64
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; This source code exposed a crash in the RISC-V Zcmp move merging pass.
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; The root cause was: mergeGPRPairInsns being called on targets without
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; Zdinx or P extension support, triggering an unreachable in
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; getGPRPairCopyOpcode.
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define void @test(i32 %arg0, i32 %arg1) nounwind {
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; ZCMP-LABEL: test:
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; ZCMP: # %bb.0: # %entry
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; ZCMP-NEXT: #APP
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; ZCMP-NEXT: csrr a4, 66
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; ZCMP-NEXT: #NO_APP
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; ZCMP-NEXT: #APP
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; ZCMP-NEXT: csrr a5, 67
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; ZCMP-NEXT: #NO_APP
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; ZCMP-NEXT: #APP
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; ZCMP-NEXT: #NO_APP
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; ZCMP-NEXT: mv a0, a4
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; ZCMP-NEXT: mv a1, a5
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; ZCMP-NEXT: tail foo
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;
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; XQCCMP-LABEL: test:
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; XQCCMP: # %bb.0: # %entry
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; XQCCMP-NEXT: #APP
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; XQCCMP-NEXT: csrr a4, 66
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; XQCCMP-NEXT: #NO_APP
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; XQCCMP-NEXT: #APP
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; XQCCMP-NEXT: csrr a5, 67
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; XQCCMP-NEXT: #NO_APP
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; XQCCMP-NEXT: #APP
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; XQCCMP-NEXT: #NO_APP
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; XQCCMP-NEXT: mv a0, a4
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; XQCCMP-NEXT: mv a1, a5
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; XQCCMP-NEXT: tail foo
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;
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; ZCMP-P-LABEL: test:
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; ZCMP-P: # %bb.0: # %entry
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; ZCMP-P-NEXT: #APP
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; ZCMP-P-NEXT: csrr a4, 66
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; ZCMP-P-NEXT: #NO_APP
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; ZCMP-P-NEXT: #APP
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; ZCMP-P-NEXT: csrr a5, 67
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; ZCMP-P-NEXT: #NO_APP
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; ZCMP-P-NEXT: #APP
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; ZCMP-P-NEXT: #NO_APP
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; ZCMP-P-NEXT: padd.dw a0, a4, zero
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; ZCMP-P-NEXT: tail foo
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;
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; ZCMP-P64-LABEL: test:
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; ZCMP-P64: # %bb.0: # %entry
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; ZCMP-P64-NEXT: #APP
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; ZCMP-P64-NEXT: csrr a4, 66
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; ZCMP-P64-NEXT: #NO_APP
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; ZCMP-P64-NEXT: #APP
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; ZCMP-P64-NEXT: csrr a5, 67
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; ZCMP-P64-NEXT: #NO_APP
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; ZCMP-P64-NEXT: #APP
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; ZCMP-P64-NEXT: #NO_APP
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; ZCMP-P64-NEXT: mv a0, a4
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; ZCMP-P64-NEXT: mv a1, a5
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; ZCMP-P64-NEXT: tail foo
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entry:
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%0 = tail call i32 asm sideeffect "csrr $0, 0x42", "=r"()
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%1 = tail call i32 asm sideeffect "csrr $0, 0x43", "=r"()
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tail call void asm sideeffect "", "~{x17},~{x10},~{x11},~{x12},~{x13}"()
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%cmp = icmp eq i32 %0, 11
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br i1 %cmp, label %if.else, label %if.else
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if.else:
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%call = tail call i32 @foo(i32 %0, i32 %1)
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br label %if.end
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if.end:
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ret void
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}
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declare i32 @foo(i32, i32)
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