[GlobalIsel] allow x86_fp80 values to be dumped.
Summary: Otherwise the fallback path fails with an assertion on x86_64 targets, when "x86_fp80" is encountered. Reviewers: t.p.northover, zvi, guyblank Reviewed By: zvi Subscribers: rovka, kristof.beyls, llvm-commits Differential Revision: https://reviews.llvm.org/D34975 llvm-svn: 307140
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@ -447,6 +447,14 @@ void MachineOperand::print(raw_ostream &OS, ModuleSlotTracker &MST,
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SmallString<16> Str;
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getFPImm()->getValueAPF().toString(Str);
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OS << "quad " << Str;
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} else if (getFPImm()->getType()->isX86_FP80Ty()) {
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APFloat APF = getFPImm()->getValueAPF();
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OS << "x86_fp80 0xK";
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APInt API = APF.bitcastToAPInt();
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OS << format_hex_no_prefix(API.getHiBits(16).getZExtValue(), 4,
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/*Upper=*/true);
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OS << format_hex_no_prefix(API.getLoBits(64).getZExtValue(), 16,
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/*Upper=*/true);
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} else {
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OS << getFPImm()->getValueAPF().convertToDouble();
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}
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@ -0,0 +1,18 @@
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; RUN: llc -O0 -mtriple=x86_64-linux-gnu -global-isel -global-isel-abort=2 -pass-remarks-missed='gisel*' -verify-machineinstrs %s -o %t.out 2> %t.err
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; RUN: FileCheck %s --check-prefix=FALLBACK-WITH-REPORT-OUT < %t.out
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; RUN: FileCheck %s --check-prefix=FALLBACK-WITH-REPORT-ERR < %t.err
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; This file checks that the fallback path to selection dag works.
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; The test is fragile in the sense that it must be updated to expose
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; something that fails with global-isel.
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; When we cannot produce a test case anymore, that means we can remove
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; the fallback path.
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; Check that we fallback on invoke translation failures.
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; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: %vreg1<def>(s80) = G_FCONSTANT x86_fp80 0xK4002A000000000000000
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for test_x86_fp80_dump
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; FALLBACK-WITH-REPORT-OUT-LABEL: test_x86_fp80_dump:
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define void @test_x86_fp80_dump(x86_fp80* %ptr){
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store x86_fp80 0xK4002A000000000000000, x86_fp80* %ptr, align 16
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ret void
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}
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