forked from OSchip/llvm-project
170 lines
7.4 KiB
LLVM
170 lines
7.4 KiB
LLVM
; RUN: not llc -O0 -global-isel -verify-machineinstrs %s -o - 2>&1 | FileCheck %s --check-prefix=ERROR
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; RUN: llc -O0 -global-isel -global-isel-abort=0 -verify-machineinstrs %s -o - 2>&1 | FileCheck %s --check-prefix=FALLBACK
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; RUN: llc -O0 -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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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64--"
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; We use __fixunstfti as the common denominator for __fixunstfti on Linux and
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; ___fixunstfti on iOS
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; ERROR: unable to lower arguments: i128 (i128)* (in function: ABIi128)
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; FALLBACK: ldr q0,
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; FALLBACK-NEXT: bl __fixunstfti
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;
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; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to lower arguments: i128 (i128)* (in function: ABIi128)
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for ABIi128
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; FALLBACK-WITH-REPORT-OUT-LABEL: ABIi128:
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; FALLBACK-WITH-REPORT-OUT: ldr q0,
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; FALLBACK-WITH-REPORT-OUT-NEXT: bl __fixunstfti
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define i128 @ABIi128(i128 %arg1) {
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%farg1 = bitcast i128 %arg1 to fp128
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%res = fptoui fp128 %farg1 to i128
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ret i128 %res
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}
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; It happens that we don't handle ConstantArray instances yet during
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; translation. Any other constant would be fine too.
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; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to translate constant: [1 x double] (in function: constant)
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for constant
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; FALLBACK-WITH-REPORT-OUT-LABEL: constant:
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; FALLBACK-WITH-REPORT-OUT: fmov d0, #1.0
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define [1 x double] @constant() {
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ret [1 x double] [double 1.0]
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}
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; The key problem here is that we may fail to create an MBB referenced by a
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; PHI. If so, we cannot complete the G_PHI and mustn't try or bad things
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; happen.
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; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: cannot select: G_STORE %vreg6, %vreg2; mem:ST4[%addr] GPR:%vreg6,%vreg2 (in function: pending_phis)
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for pending_phis
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; FALLBACK-WITH-REPORT-OUT-LABEL: pending_phis:
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define i32 @pending_phis(i1 %tst, i32 %val, i32* %addr) {
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br i1 %tst, label %true, label %false
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end:
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%res = phi i32 [%val, %true], [42, %false]
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ret i32 %res
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true:
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store atomic i32 42, i32* %addr seq_cst, align 4
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br label %end
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false:
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br label %end
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}
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; General legalizer inability to handle types whose size wasn't a power of 2.
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; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: %vreg1<def>(s42) = G_LOAD %vreg0; mem:LD6[%addr](align=8) (in function: odd_type)
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for odd_type
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; FALLBACK-WITH-REPORT-OUT-LABEL: odd_type:
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define void @odd_type(i42* %addr) {
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%val42 = load i42, i42* %addr
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ret void
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}
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; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: %vreg1<def>(<7 x s32>) = G_LOAD %vreg0; mem:LD28[%addr](align=32) (in function: odd_vector)
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for odd_vector
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; FALLBACK-WITH-REPORT-OUT-LABEL: odd_vector:
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define void @odd_vector(<7 x i32>* %addr) {
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%vec = load <7 x i32>, <7 x i32>* %addr
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ret void
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}
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; AArch64 was asserting instead of returning an invalid mapping for unknown
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; sizes.
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; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to translate instruction: ret: ' ret i128 undef' (in function: sequence_sizes)
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for sequence_sizes
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; FALLBACK-WITH-REPORT-LABEL: sequence_sizes:
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define i128 @sequence_sizes([8 x i8] %in) {
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ret i128 undef
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}
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; Just to make sure we don't accidentally emit a normal load/store.
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; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: cannot select: %vreg2<def>(s64) = G_LOAD %vreg0; mem:LD8[%addr] GPR:%vreg2,%vreg0 (in function: atomic_ops)
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for atomic_ops
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; FALLBACK-WITH-REPORT-LABEL: atomic_ops:
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define i64 @atomic_ops(i64* %addr) {
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store atomic i64 0, i64* %addr unordered, align 8
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%res = load atomic i64, i64* %addr seq_cst, align 8
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ret i64 %res
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}
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; Make sure we don't mess up metadata arguments.
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declare void @llvm.write_register.i64(metadata, i64)
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; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to translate instruction: call: ' call void @llvm.write_register.i64(metadata !0, i64 0)' (in function: test_write_register_intrin)
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for test_write_register_intrin
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; FALLBACK-WITH-REPORT-LABEL: test_write_register_intrin:
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define void @test_write_register_intrin() {
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call void @llvm.write_register.i64(metadata !{!"sp"}, i64 0)
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ret void
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}
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@_ZTIi = external global i8*
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declare i32 @__gxx_personality_v0(...)
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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 translate instruction: invoke: ' invoke void %callee(i128 0)
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; FALLBACK-WITH-REPORT-NEXT: to label %continue unwind label %broken' (in function: invoke_weird_type)
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for invoke_weird_type
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; FALLBACK-WITH-REPORT-OUT-LABEL: invoke_weird_type:
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define void @invoke_weird_type(void(i128)* %callee) personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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invoke void %callee(i128 0)
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to label %continue unwind label %broken
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broken:
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landingpad { i8*, i32 } catch i8* bitcast(i8** @_ZTIi to i8*)
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ret void
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continue:
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ret void
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}
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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: %vreg0<def>(s128) = G_FCONSTANT quad 2
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for test_quad_dump
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; FALLBACK-WITH-REPORT-OUT-LABEL: test_quad_dump:
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define fp128 @test_quad_dump() {
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ret fp128 0xL00000000000000004000000000000000
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}
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; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: %vreg0<def>(p0) = G_EXTRACT_VECTOR_ELT %vreg1, %vreg2; (in function: vector_of_pointers_extractelement)
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for vector_of_pointers_extractelement
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; FALLBACK-WITH-REPORT-OUT-LABEL: vector_of_pointers_extractelement:
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@var = global <2 x i16*> zeroinitializer
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define void @vector_of_pointers_extractelement() {
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br label %end
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block:
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%dummy = extractelement <2 x i16*> %vec, i32 0
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ret void
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end:
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%vec = load <2 x i16*>, <2 x i16*>* undef
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br label %block
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}
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; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: %vreg0<def>(<2 x p0>) = G_INSERT_VECTOR_ELT %vreg1, %vreg2, %vreg3; (in function: vector_of_pointers_insertelement
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; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for vector_of_pointers_insertelement
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; FALLBACK-WITH-REPORT-OUT-LABEL: vector_of_pointers_insertelement:
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define void @vector_of_pointers_insertelement() {
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br label %end
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block:
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%dummy = insertelement <2 x i16*> %vec, i16* null, i32 0
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ret void
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end:
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%vec = load <2 x i16*>, <2 x i16*>* undef
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br label %block
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}
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