[LoongArch] Fix GOT usage for non-dso_local function calls in large code model

This commit fixes an issue in the large code model where non-dso_local
function calls did not use the GOT as expected in PIC mode. Instead,
direct PC-relative access was incorrectly applied, leading to linker
errors when building shared libraries.

For `ExternalSymbol`, it is not possible to determine whether it is
dso_local during pseudo-instruction expansion. We use target flags to
differentiate whether GOT should be used.

Reviewed By: heiher, SixWeining

Pull Request: llvm#117099

Author: wangleiat

llvm/lib/Target/LoongArch/LoongArchExpandPseudoInsts.cpp

@@ -564,7 +564,7 @@ bool LoongArchPreRAExpandPseudo::expandFunctionCALL(
             ? MF->getRegInfo().createVirtualRegister(&LoongArch::GPRRegClass)
             : LoongArch::R1;
 
-    bool UseGOT = Func.isGlobal() && !Func.getGlobal()->isDSOLocal();
+    bool UseGOT = Func.getTargetFlags() == LoongArchII::MO_CALL_PLT;
     unsigned MO = UseGOT ? LoongArchII::MO_GOT_PC_HI : LoongArchII::MO_PCREL_LO;
     unsigned LAOpcode = UseGOT ? LoongArch::LDX_D : LoongArch::ADD_D;
     expandLargeAddressLoad(MBB, MBBI, NextMBBI, LAOpcode, MO, Func, AddrReg,

llvm/test/CodeGen/LoongArch/code-models.ll

@@ -82,11 +82,11 @@ define void @call_external_sym(ptr %dst) {
 ; LARGE-NEXT:    .cfi_offset 1, -8
 ; LARGE-NEXT:    ori $a2, $zero, 1000
 ; LARGE-NEXT:    move $a1, $zero
-; LARGE-NEXT:    pcalau12i $a3, %pc_hi20(memset)
-; LARGE-NEXT:    addi.d $ra, $zero, %pc_lo12(memset)
-; LARGE-NEXT:    lu32i.d $ra, %pc64_lo20(memset)
-; LARGE-NEXT:    lu52i.d $ra, $ra, %pc64_hi12(memset)
-; LARGE-NEXT:    add.d $ra, $ra, $a3
+; LARGE-NEXT:    pcalau12i $a3, %got_pc_hi20(memset)
+; LARGE-NEXT:    addi.d $ra, $zero, %got_pc_lo12(memset)
+; LARGE-NEXT:    lu32i.d $ra, %got64_pc_lo20(memset)
+; LARGE-NEXT:    lu52i.d $ra, $ra, %got64_pc_hi12(memset)
+; LARGE-NEXT:    ldx.d $ra, $ra, $a3
 ; LARGE-NEXT:    jirl $ra, $ra, 0
 ; LARGE-NEXT:    ld.d $ra, $sp, 8 # 8-byte Folded Reload
 ; LARGE-NEXT:    addi.d $sp, $sp, 16

llvm/test/CodeGen/LoongArch/expand-adjacency.ll

@@ -14,10 +14,10 @@ declare void @llvm.memset.p0.i64(ptr, i8, i64, i1)
 
 define void @call_external_sym(ptr %dst) {
 ; LARGE-LABEL: call_external_sym:
-; LARGE:         pcalau12i [[REG1:\$[a-z0-9]+]], %pc_hi20(memset)
-; LARGE-NEXT:    addi.d [[REG2:\$[a-z0-9]+]], $zero, %pc_lo12(memset)
-; LARGE-NEXT:    lu32i.d [[REG2]], %pc64_lo20(memset)
-; LARGE-NEXT:    lu52i.d [[REG2]], [[REG2]], %pc64_hi12(memset)
+; LARGE:         pcalau12i [[REG1:\$[a-z0-9]+]], %got_pc_hi20(memset)
+; LARGE-NEXT:    addi.d [[REG2:\$[a-z0-9]+]], $zero, %got_pc_lo12(memset)
+; LARGE-NEXT:    lu32i.d [[REG2]], %got64_pc_lo20(memset)
+; LARGE-NEXT:    lu52i.d [[REG2]], [[REG2]], %got64_pc_hi12(memset)
 entry:
   call void @llvm.memset.p0.i64(ptr %dst, i8 0, i64 1000, i1 false)
   ret void

llvm/test/CodeGen/LoongArch/machinelicm-address-pseudos.ll

@@ -279,11 +279,11 @@ define void @test_la_tls_ld(i32 signext %n) {
 ; LA64LARGE-NEXT:  .LBB3_1: # %loop
 ; LA64LARGE-NEXT:    # =>This Inner Loop Header: Depth=1
 ; LA64LARGE-NEXT:    move $a0, $s0
-; LA64LARGE-NEXT:    pcalau12i $a1, %pc_hi20(__tls_get_addr)
-; LA64LARGE-NEXT:    addi.d $ra, $zero, %pc_lo12(__tls_get_addr)
-; LA64LARGE-NEXT:    lu32i.d $ra, %pc64_lo20(__tls_get_addr)
-; LA64LARGE-NEXT:    lu52i.d $ra, $ra, %pc64_hi12(__tls_get_addr)
-; LA64LARGE-NEXT:    add.d $ra, $ra, $a1
+; LA64LARGE-NEXT:    pcalau12i $a1, %got_pc_hi20(__tls_get_addr)
+; LA64LARGE-NEXT:    addi.d $ra, $zero, %got_pc_lo12(__tls_get_addr)
+; LA64LARGE-NEXT:    lu32i.d $ra, %got64_pc_lo20(__tls_get_addr)
+; LA64LARGE-NEXT:    lu52i.d $ra, $ra, %got64_pc_hi12(__tls_get_addr)
+; LA64LARGE-NEXT:    ldx.d $ra, $ra, $a1
 ; LA64LARGE-NEXT:    jirl $ra, $ra, 0
 ; LA64LARGE-NEXT:    ld.w $zero, $a0, 0
 ; LA64LARGE-NEXT:    addi.w $s1, $s1, 1
@@ -445,11 +445,11 @@ define void @test_la_tls_gd(i32 signext %n) nounwind {
 ; LA64LARGE-NEXT:  .LBB5_1: # %loop
 ; LA64LARGE-NEXT:    # =>This Inner Loop Header: Depth=1
 ; LA64LARGE-NEXT:    move $a0, $s0
-; LA64LARGE-NEXT:    pcalau12i $a1, %pc_hi20(__tls_get_addr)
-; LA64LARGE-NEXT:    addi.d $ra, $zero, %pc_lo12(__tls_get_addr)
-; LA64LARGE-NEXT:    lu32i.d $ra, %pc64_lo20(__tls_get_addr)
-; LA64LARGE-NEXT:    lu52i.d $ra, $ra, %pc64_hi12(__tls_get_addr)
-; LA64LARGE-NEXT:    add.d $ra, $ra, $a1
+; LA64LARGE-NEXT:    pcalau12i $a1, %got_pc_hi20(__tls_get_addr)
+; LA64LARGE-NEXT:    addi.d $ra, $zero, %got_pc_lo12(__tls_get_addr)
+; LA64LARGE-NEXT:    lu32i.d $ra, %got64_pc_lo20(__tls_get_addr)
+; LA64LARGE-NEXT:    lu52i.d $ra, $ra, %got64_pc_hi12(__tls_get_addr)
+; LA64LARGE-NEXT:    ldx.d $ra, $ra, $a1
 ; LA64LARGE-NEXT:    jirl $ra, $ra, 0
 ; LA64LARGE-NEXT:    ld.w $zero, $a0, 0
 ; LA64LARGE-NEXT:    addi.w $s1, $s1, 1

llvm/test/CodeGen/LoongArch/psabi-restricted-scheduling.ll

@@ -102,23 +102,23 @@ define void @foo() nounwind {
 ; LARGE_NO_SCH-NEXT:    lu32i.d $a1, %got64_pc_lo20(gd)
 ; LARGE_NO_SCH-NEXT:    lu52i.d $a1, $a1, %got64_pc_hi12(gd)
 ; LARGE_NO_SCH-NEXT:    add.d $a0, $a1, $a0
-; LARGE_NO_SCH-NEXT:    pcalau12i $a1, %pc_hi20(__tls_get_addr)
-; LARGE_NO_SCH-NEXT:    addi.d $ra, $zero, %pc_lo12(__tls_get_addr)
-; LARGE_NO_SCH-NEXT:    lu32i.d $ra, %pc64_lo20(__tls_get_addr)
-; LARGE_NO_SCH-NEXT:    lu52i.d $ra, $ra, %pc64_hi12(__tls_get_addr)
-; LARGE_NO_SCH-NEXT:    add.d $ra, $ra, $a1
+; LARGE_NO_SCH-NEXT:    pcalau12i $a1, %got_pc_hi20(__tls_get_addr)
+; LARGE_NO_SCH-NEXT:    addi.d $ra, $zero, %got_pc_lo12(__tls_get_addr)
+; LARGE_NO_SCH-NEXT:    lu32i.d $ra, %got64_pc_lo20(__tls_get_addr)
+; LARGE_NO_SCH-NEXT:    lu52i.d $ra, $ra, %got64_pc_hi12(__tls_get_addr)
+; LARGE_NO_SCH-NEXT:    ldx.d $ra, $ra, $a1
 ; LARGE_NO_SCH-NEXT:    jirl $ra, $ra, 0
 ; LARGE_NO_SCH-NEXT:    ld.d $zero, $a0, 0
 ; LARGE_NO_SCH-NEXT:    pcalau12i $a0, %ld_pc_hi20(ld)
 ; LARGE_NO_SCH-NEXT:    addi.d $a1, $zero, %got_pc_lo12(ld)
 ; LARGE_NO_SCH-NEXT:    lu32i.d $a1, %got64_pc_lo20(ld)
 ; LARGE_NO_SCH-NEXT:    lu52i.d $a1, $a1, %got64_pc_hi12(ld)
 ; LARGE_NO_SCH-NEXT:    add.d $a0, $a1, $a0
-; LARGE_NO_SCH-NEXT:    pcalau12i $a1, %pc_hi20(__tls_get_addr)
-; LARGE_NO_SCH-NEXT:    addi.d $ra, $zero, %pc_lo12(__tls_get_addr)
-; LARGE_NO_SCH-NEXT:    lu32i.d $ra, %pc64_lo20(__tls_get_addr)
-; LARGE_NO_SCH-NEXT:    lu52i.d $ra, $ra, %pc64_hi12(__tls_get_addr)
-; LARGE_NO_SCH-NEXT:    add.d $ra, $ra, $a1
+; LARGE_NO_SCH-NEXT:    pcalau12i $a1, %got_pc_hi20(__tls_get_addr)
+; LARGE_NO_SCH-NEXT:    addi.d $ra, $zero, %got_pc_lo12(__tls_get_addr)
+; LARGE_NO_SCH-NEXT:    lu32i.d $ra, %got64_pc_lo20(__tls_get_addr)
+; LARGE_NO_SCH-NEXT:    lu52i.d $ra, $ra, %got64_pc_hi12(__tls_get_addr)
+; LARGE_NO_SCH-NEXT:    ldx.d $ra, $ra, $a1
 ; LARGE_NO_SCH-NEXT:    jirl $ra, $ra, 0
 ; LARGE_NO_SCH-NEXT:    ld.d $zero, $a0, 0
 ; LARGE_NO_SCH-NEXT:    pcalau12i $a0, %ie_pc_hi20(ie)
@@ -158,23 +158,23 @@ define void @foo() nounwind {
 ; LARGE_SCH-NEXT:    lu32i.d $a1, %got64_pc_lo20(gd)
 ; LARGE_SCH-NEXT:    lu52i.d $a1, $a1, %got64_pc_hi12(gd)
 ; LARGE_SCH-NEXT:    add.d $a0, $a1, $a0
-; LARGE_SCH-NEXT:    pcalau12i $a1, %pc_hi20(__tls_get_addr)
-; LARGE_SCH-NEXT:    addi.d $ra, $zero, %pc_lo12(__tls_get_addr)
-; LARGE_SCH-NEXT:    lu32i.d $ra, %pc64_lo20(__tls_get_addr)
-; LARGE_SCH-NEXT:    lu52i.d $ra, $ra, %pc64_hi12(__tls_get_addr)
-; LARGE_SCH-NEXT:    add.d $ra, $ra, $a1
+; LARGE_SCH-NEXT:    pcalau12i $a1, %got_pc_hi20(__tls_get_addr)
+; LARGE_SCH-NEXT:    addi.d $ra, $zero, %got_pc_lo12(__tls_get_addr)
+; LARGE_SCH-NEXT:    lu32i.d $ra, %got64_pc_lo20(__tls_get_addr)
+; LARGE_SCH-NEXT:    lu52i.d $ra, $ra, %got64_pc_hi12(__tls_get_addr)
+; LARGE_SCH-NEXT:    ldx.d $ra, $ra, $a1
 ; LARGE_SCH-NEXT:    jirl $ra, $ra, 0
 ; LARGE_SCH-NEXT:    ld.d $zero, $a0, 0
 ; LARGE_SCH-NEXT:    pcalau12i $a0, %ld_pc_hi20(ld)
 ; LARGE_SCH-NEXT:    addi.d $a1, $zero, %got_pc_lo12(ld)
 ; LARGE_SCH-NEXT:    lu32i.d $a1, %got64_pc_lo20(ld)
 ; LARGE_SCH-NEXT:    lu52i.d $a1, $a1, %got64_pc_hi12(ld)
 ; LARGE_SCH-NEXT:    add.d $a0, $a1, $a0
-; LARGE_SCH-NEXT:    pcalau12i $a1, %pc_hi20(__tls_get_addr)
-; LARGE_SCH-NEXT:    addi.d $ra, $zero, %pc_lo12(__tls_get_addr)
-; LARGE_SCH-NEXT:    lu32i.d $ra, %pc64_lo20(__tls_get_addr)
-; LARGE_SCH-NEXT:    lu52i.d $ra, $ra, %pc64_hi12(__tls_get_addr)
-; LARGE_SCH-NEXT:    add.d $ra, $ra, $a1
+; LARGE_SCH-NEXT:    pcalau12i $a1, %got_pc_hi20(__tls_get_addr)
+; LARGE_SCH-NEXT:    addi.d $ra, $zero, %got_pc_lo12(__tls_get_addr)
+; LARGE_SCH-NEXT:    lu32i.d $ra, %got64_pc_lo20(__tls_get_addr)
+; LARGE_SCH-NEXT:    lu52i.d $ra, $ra, %got64_pc_hi12(__tls_get_addr)
+; LARGE_SCH-NEXT:    ldx.d $ra, $ra, $a1
 ; LARGE_SCH-NEXT:    jirl $ra, $ra, 0
 ; LARGE_SCH-NEXT:    ld.d $zero, $a0, 0
 ; LARGE_SCH-NEXT:    pcalau12i $a0, %ie_pc_hi20(ie)

llvm/test/CodeGen/LoongArch/tls-models.ll

@@ -55,11 +55,11 @@ define ptr @f1() nounwind {
 ; LA64LARGEPIC-NEXT:    lu32i.d $a1, %got64_pc_lo20(unspecified)
 ; LA64LARGEPIC-NEXT:    lu52i.d $a1, $a1, %got64_pc_hi12(unspecified)
 ; LA64LARGEPIC-NEXT:    add.d $a0, $a1, $a0
-; LA64LARGEPIC-NEXT:    pcalau12i $a1, %pc_hi20(__tls_get_addr)
-; LA64LARGEPIC-NEXT:    addi.d $ra, $zero, %pc_lo12(__tls_get_addr)
-; LA64LARGEPIC-NEXT:    lu32i.d $ra, %pc64_lo20(__tls_get_addr)
-; LA64LARGEPIC-NEXT:    lu52i.d $ra, $ra, %pc64_hi12(__tls_get_addr)
-; LA64LARGEPIC-NEXT:    add.d $ra, $ra, $a1
+; LA64LARGEPIC-NEXT:    pcalau12i $a1, %got_pc_hi20(__tls_get_addr)
+; LA64LARGEPIC-NEXT:    addi.d $ra, $zero, %got_pc_lo12(__tls_get_addr)
+; LA64LARGEPIC-NEXT:    lu32i.d $ra, %got64_pc_lo20(__tls_get_addr)
+; LA64LARGEPIC-NEXT:    lu52i.d $ra, $ra, %got64_pc_hi12(__tls_get_addr)
+; LA64LARGEPIC-NEXT:    ldx.d $ra, $ra, $a1
 ; LA64LARGEPIC-NEXT:    jirl $ra, $ra, 0
 ; LA64LARGEPIC-NEXT:    ld.d $ra, $sp, 8 # 8-byte Folded Reload
 ; LA64LARGEPIC-NEXT:    addi.d $sp, $sp, 16
@@ -168,11 +168,11 @@ define ptr @f2() nounwind {
 ; LA64LARGEPIC-NEXT:    lu32i.d $a1, %got64_pc_lo20(ld)
 ; LA64LARGEPIC-NEXT:    lu52i.d $a1, $a1, %got64_pc_hi12(ld)
 ; LA64LARGEPIC-NEXT:    add.d $a0, $a1, $a0
-; LA64LARGEPIC-NEXT:    pcalau12i $a1, %pc_hi20(__tls_get_addr)
-; LA64LARGEPIC-NEXT:    addi.d $ra, $zero, %pc_lo12(__tls_get_addr)
-; LA64LARGEPIC-NEXT:    lu32i.d $ra, %pc64_lo20(__tls_get_addr)
-; LA64LARGEPIC-NEXT:    lu52i.d $ra, $ra, %pc64_hi12(__tls_get_addr)
-; LA64LARGEPIC-NEXT:    add.d $ra, $ra, $a1
+; LA64LARGEPIC-NEXT:    pcalau12i $a1, %got_pc_hi20(__tls_get_addr)
+; LA64LARGEPIC-NEXT:    addi.d $ra, $zero, %got_pc_lo12(__tls_get_addr)
+; LA64LARGEPIC-NEXT:    lu32i.d $ra, %got64_pc_lo20(__tls_get_addr)
+; LA64LARGEPIC-NEXT:    lu52i.d $ra, $ra, %got64_pc_hi12(__tls_get_addr)
+; LA64LARGEPIC-NEXT:    ldx.d $ra, $ra, $a1
 ; LA64LARGEPIC-NEXT:    jirl $ra, $ra, 0
 ; LA64LARGEPIC-NEXT:    ld.d $ra, $sp, 8 # 8-byte Folded Reload
 ; LA64LARGEPIC-NEXT:    addi.d $sp, $sp, 16