LoongArch: ld: Add support for tls le relax.

Add tls le relax related testsuites in ld.

The new test cases are mainly tested in three aspects:

1. tls le relax function correctness test.
2. tls le relax boundary check test.
3. tls le relax function compatibility test.

ld/testsuite/ChangeLog:

	* ld/testsuite/ld-loongarch-elf/relax.exp: Modify test.
	* ld/testsuite/ld-loongarch-elf/old-tls-le.s: New test.
	* ld/testsuite/ld-loongarch-elf/relax-bound-check-tls-le.s: Likewise.
	* ld/testsuite/ld-loongarch-elf/tls-relax-compatible-check-new.s: Likewise.
	* ld/testsuite/ld-loongarch-elf/relax-tls-le.s: Likewise.
	* ld/testsuite/ld-loongarch-elf/tls-relax-compatible-check-old.s: Likewise.

6 files changed, 320 insertions, 1 deletions

diff --git a/ld/testsuite/ld-loongarch-elf/old-tls-le.s b/ld/testsuite/ld-loongarch-elf/old-tls-le.s
new file mode 100644
index 0000000..be3d2b9
--- /dev/null
+++ b/ld/testsuite/ld-loongarch-elf/old-tls-le.s
@@ -0,0 +1,23 @@
+/* This test case mainly tests whether the original
+   tls le assembly instruction can be linked normally
+   after tls le relax is added to the current ld.  */
+
+        .text
+        .globl  aa
+        .section        .tbss,"awT",@nobits
+        .align  2
+        .type   aa, @object
+        .size   aa, 4
+aa:
+        .space  4
+        .text
+        .align  2
+        .globl  main
+        .type   main, @function
+main:
+        lu12i.w $r12,%le_hi20(aa)
+        ori     $r12,$r12,%le_lo12(aa)
+        add.d   $r12,$r12,$r2
+        addi.w  $r13,$r0,2                      # 0x2
+        stptr.w $r13,$r12,0
+
diff --git a/ld/testsuite/ld-loongarch-elf/relax-bound-check-tls-le.s b/ld/testsuite/ld-loongarch-elf/relax-bound-check-tls-le.s
new file mode 100644
index 0000000..b2a64b5
--- /dev/null
+++ b/ld/testsuite/ld-loongarch-elf/relax-bound-check-tls-le.s
@@ -0,0 +1,53 @@
+/* This test case mainly tests whether the address of the
+   tls le symbol can be resolved normally when the offset
+   of the symbol is greater than 0x800. (When the symbol
+   offset is greater than 0x800, relax is not performed).  */
+
+        .text
+        .globl  count1
+        .section        .tbss,"awT",@nobits
+        .align  2
+        .type   count1, @object
+        .size   count1, 4
+count1:
+        .space  0x400
+        .globl  count2
+        .align  2
+        .type   count2, @object
+        .size   count2, 4
+count2:
+        .space  0x400
+        .globl  count3
+        .align  2
+        .type   count3, @object
+        .size   count3, 4
+count3:
+	.space  0x400
+        .globl  count4
+        .align  2
+        .type   count4, @object
+        .size   count4, 4
+count4:
+        .space  4
+        .text
+        .align  2
+        .globl  main
+        .type   main, @function
+main:
+	lu12i.w	$r12,%le_hi20_r(count1)
+	add.d	$r12,$r12,$r2,%le_add_r(count1)
+	addi.w	$r13,$r0,1
+	st.w	$r13,$r12,%le_lo12_r(count1)
+	lu12i.w $r12,%le_hi20_r(count2)
+	add.d   $r12,$r12,$r2,%le_add_r(count2)
+	addi.w  $r13,$r0,2
+	st.w    $r13,$r12,%le_lo12_r(count2)
+	lu12i.w $r12,%le_hi20(count3)
+	add.d   $r12,$r12,$r2,%le_add_r(count3)
+	addi.w  $r13,$r0,3
+	st.w    $r13,$r12,%le_lo12_r(count3)
+	lu12i.w $r12,%le_hi20(count4)
+	add.d   $r12,$r12,$r2,%le_add_r(count4)
+	addi.w  $r13,$r0,4
+	st.w    $r13,$r12,%le_lo12_r(count4)
+
diff --git a/ld/testsuite/ld-loongarch-elf/relax-tls-le.s b/ld/testsuite/ld-loongarch-elf/relax-tls-le.s
new file mode 100644
index 0000000..1ea53ba
--- /dev/null
+++ b/ld/testsuite/ld-loongarch-elf/relax-tls-le.s
@@ -0,0 +1,26 @@
+/* This test case mainly tests whether the tls le variable
+   address acquisition can be relax normally.
+
+   before relax:                                  after relax:
+
+   lu12i.w $r12,%le_hi20_r(sym)           ====>    (instruction deleted).
+   add.d   $r12,$r12,$r2,%le_add_r(sym)   ====>    (instruction deleted).
+   st.w    $r13,$r12,%le_lo12_r(sym)      ====>    st.w    $r13,$r2,%le_lo12_r(sym).  */
+
+	.text
+	.globl	a
+	.section	.tbss,"awT",@nobits
+	.align	2
+	.type	a, @object
+	.size	a, 4
+a:
+	.space	4
+	.text
+	.align	2
+	.globl	main
+	.type	main, @function
+main:
+	lu12i.w	$r12,%le_hi20_r(a)
+	add.d	$r12,$r12,$r2,%le_add_r(a)
+	addi.w	$r13,$r0,1			# 0x1
+	st.w	$r13,$r12,%le_lo12_r(a)
diff --git a/ld/testsuite/ld-loongarch-elf/relax.exp b/ld/testsuite/ld-loongarch-elf/relax.exp
index 77323d8..b697d01 100644
--- a/ld/testsuite/ld-loongarch-elf/relax.exp
+++ b/ld/testsuite/ld-loongarch-elf/relax.exp
@@ -33,8 +33,90 @@ if [istarget loongarch64-*-*] {
 	"relax" \
       ] \
     ]
+    set tls_relax_builds [list \
+      [list \
+	"tls_relax_builds" \
+	"" \
+	"" \
+	{relax-tls-le.s} \
+	{}        \
+	"relax-tls-le" \
+      ] \
+    ]
+    set tls_no_relax_builds [list \
+      [list \
+	"tls_no_relax_builds" \
+	"-Wl,--no-relax" \
+	"" \
+	{relax-tls-le.s} \
+	{}        \
+	"no-relax-tls-le" \
+      ] \
+    ]
+
+    set relax_bound_check [list \
+      [list \
+	"relax_bound_check" \
+	"" \
+	"" \
+	{relax-bound-check-tls-le.s} \
+	{}        \
+	"relax-bound-check-tls-le" \
+      ] \
+    ]
+    set no_relax_bound_check [list \
+      [list \
+	"no_relax_bound_check" \
+	"-Wl,--no-relax" \
+	"" \
+	{relax-bound-check-tls-le.s} \
+	{}        \
+	"no-relax-bound-check-tls-le" \
+      ] \
+    ]
+
+    set old_tls_le [list \
+      [list \
+	"old_tls_le" \
+	"" \
+	"" \
+	{old-tls-le.s} \
+	{}        \
+	"old-tls-le" \
+      ] \
+    ]
+
+     set relax_compatible [list \
+      [list \
+	"relax_compatible" \
+	"" \
+	"" \
+	{tls-relax-compatible-check-new.s tls-relax-compatible-check-old.s} \
+	{}        \
+	"realx-compatible" \
+      ] \
+    ]
+
+    set no_relax_compatible [list \
+      [list \
+	"no_relax_compatible" \
+	"-Wl,--no-relax" \
+	"" \
+	{tls-relax-compatible-check-new.s tls-relax-compatible-check-old.s} \
+	{}        \
+	"no-realx-compatible" \
+      ] \
+    ]
+
 
     run_cc_link_tests $pre_builds
+    run_cc_link_tests $tls_relax_builds
+    run_cc_link_tests $tls_no_relax_builds
+    run_cc_link_tests $relax_bound_check
+    run_cc_link_tests $no_relax_bound_check
+    run_cc_link_tests $old_tls_le
+    run_cc_link_tests $relax_compatible
+    run_cc_link_tests $no_relax_compatible
 
     if [file exist "tmpdir/relax"] {
       set objdump_output [run_host_cmd "objdump" "-d tmpdir/relax"]
@@ -114,8 +196,75 @@ if [istarget loongarch64-*-*] {
 		"relax-segment-max" \
 	    ] \
 	]
-  }
 
+    if [file exist "tmpdir/relax-tls-le"] {
+      set objdump_output1 [run_host_cmd "objdump" "-d tmpdir/relax-tls-le"]
+      if { [ regexp ".addi.*st.*" $objdump_output1] } {
+	pass "loongarch relax success"
+      } {
+	fail "loongarch relax fail"
+      }
+    }
+    if [file exist "tmpdir/no-relax-tls-le"] {
+      set objdump_output2 [run_host_cmd "objdump" "-d tmpdir/no-relax-tls-le"]
+      if { [ regexp ".*lu12i.*add.*addi.*st.*" $objdump_output2] } {
+	pass "loongarch no-relax success"
+      } {
+	fail "loongarch no-relax fail"
+      }
+
+    }
+    if [file exist "tmpdir/old-tls-le"] {
+      set objdump_output3 [run_host_cmd "objdump" "-d tmpdir/old-tls-le"]
+      if { [ regexp ".*lu12i.*ori.*add.*addi.*stptr.*" $objdump_output3] } {
+	pass "loongarch old tls le success"
+      } {
+	fail "loongarch old tls le fail"
+      }
+
+    }
+
+    if [file exist "tmpdir/realx-compatible"] {
+      set objdump_output4 [run_host_cmd "objdump" "-d tmpdir/realx-compatible"]
+      if { [ regexp ".addi.*st.*" $objdump_output4] && \
+	   [ regexp ".*lu12i.*ori.*add.*addi.*stptr.*" $objdump_output4] } {
+	pass "loongarch tls le relax compatible check success"
+      } {
+	fail "loongarch tls le relax compatible check fail"
+      }
+    }
+
+    if [file exist "tmpdir/no-realx-compatible"] {
+      set objdump_output4 [run_host_cmd "objdump" "-d tmpdir/realx-compatible"]
+      if { [ regexp ".*lu12i.*add.*addi.*st.*" $objdump_output4] && \
+	   [ regexp ".*lu12i.*ori.*add.*addi.*stptr.*" $objdump_output4] } {
+	pass "loongarch tls le no-relax compatible check success"
+      } {
+	fail "loongarch tls le no-relax compatible check fail"
+      }
+    }
+
+
+    if [file exist "tmpdir/relax-bound-check-tls-le"] {
+      set objdump_output5 [run_host_cmd "objdump" "-d tmpdir/relax-bound-check-tls-le"]
+      if { [ regexp ".*lu12i.*add.*addi.*st.*" $objdump_output5] && \
+	   [ regexp ".addi.*st.*" $objdump_output5] } {
+	pass "loongarch no-relax success"
+      } {
+	fail "loongarch no-relax fail"
+      }
+
+    }
+    if [file exist "tmpdir/no-relax-bound-check-tls-le"] {
+      set objdump_output5 [run_host_cmd "objdump" "-d tmpdir/no-relax-bound-check-tls-le"]
+      if { [ regexp ".*addi.*st.*" $objdump_output5] } {
+	pass "loongarch no-relax success"
+      } {
+	fail "loongarch no-relax fail"
+      }
+    }
+
+  }
   run_ld_link_tests \
       [list \
 	  [list \
diff --git a/ld/testsuite/ld-loongarch-elf/tls-relax-compatible-check-new.s b/ld/testsuite/ld-loongarch-elf/tls-relax-compatible-check-new.s
new file mode 100644
index 0000000..059ca0b
--- /dev/null
+++ b/ld/testsuite/ld-loongarch-elf/tls-relax-compatible-check-new.s
@@ -0,0 +1,35 @@
+/* This test case mainly carries out ld compatibility test.
+   This test case is the new tls le instruction sequence,
+   which will be linked with tls-relax-compatible-check-old.s.
+   If the link is normal, it indicates that there is no
+   compatibility problem.  */
+
+	.text
+	.globl	new
+	.section	.tbss,"awT",@nobits
+	.align	2
+	.type	new, @object
+	.size	new, 4
+new:
+	.space	4
+	.text
+	.align	2
+	.globl	main
+	.type	main, @function
+main:
+.LFB0 = .
+	addi.d	$r3,$r3,-16
+	st.d	$r1,$r3,8
+	stptr.d	$r22,$r3,0
+	addi.d	$r22,$r3,16
+	bl	%plt(old)
+	lu12i.w	$r12,%le_hi20_r(new)
+	add.d	$r12,$r12,$r2,%le_add_r(new)
+	addi.w	$r13,$r0,2			# 0x2
+	st.w	$r13,$r12,%le_lo12_r(new)
+	or	$r12,$r0,$r0
+	or	$r4,$r12,$r0
+	ld.d	$r1,$r3,8
+	ldptr.d	$r22,$r3,0
+	addi.d	$r3,$r3,16
+	jr	$r1
diff --git a/ld/testsuite/ld-loongarch-elf/tls-relax-compatible-check-old.s b/ld/testsuite/ld-loongarch-elf/tls-relax-compatible-check-old.s
new file mode 100644
index 0000000..083a268
--- /dev/null
+++ b/ld/testsuite/ld-loongarch-elf/tls-relax-compatible-check-old.s
@@ -0,0 +1,33 @@
+/* This test case mainly carries out ld compatibility test.
+   This test case is the old tls le instruction sequence,
+   which will be linked with tls-relax-compatible-check-new.s.
+   If the link is normal, it indicates that there is no
+   compatibility problem. */
+
+	.text
+	.globl	older
+	.section	.tbss,"awT",@nobits
+	.align	2
+	.type	older, @object
+	.size	older, 4
+older:
+	.space	4
+	.text
+	.align	2
+	.globl	old
+	.type	old, @function
+old:
+.LFB0 = .
+	addi.d	$r3,$r3,-16
+	st.d	$r22,$r3,8
+	addi.d	$r22,$r3,16
+	lu12i.w	$r12,%le_hi20(older)
+	ori	$r12,$r12,%le_lo12(older)
+	add.d	$r12,$r12,$r2
+	addi.w	$r13,$r0,1			# 0x1
+	stptr.w	$r13,$r12,0
+	nop
+	or	$r4,$r12,$r0
+	ld.d	$r22,$r3,8
+	addi.d	$r3,$r3,16
+	jr	$r1