libsanitizer: Use SSE to save and restore XMM registers

Use SSE, instead of AVX, to save and restore XMM registers to support
processors without AVX.  The affected codes are unused in upstream since

https://github.com/llvm/llvm-project/commit/66d4ce7e26a5

and will be removed in

https://reviews.llvm.org/D112604

This fixed

FAIL: g++.dg/tsan/pthread_cond_clockwait.C   -O0  execution test
FAIL: g++.dg/tsan/pthread_cond_clockwait.C   -O2  execution test

on machines without AVX.

	PR sanitizer/103466
	* tsan/tsan_rtl_amd64.S (__tsan_trace_switch_thunk): Replace
	vmovdqu with movdqu.
	(__tsan_report_race_thunk): Likewise.

diff --git a/libsanitizer/tsan/tsan_rtl_amd64.S b/libsanitizer/tsan/tsan_rtl_amd64.S
index 632b19d..c15b01e 100644 (file)
--- a/libsanitizer/tsan/tsan_rtl_amd64.S
+++ b/libsanitizer/tsan/tsan_rtl_amd64.S
@@ -45,22 +45,22 @@ ASM_SYMBOL(__tsan_trace_switch_thunk):
   # All XMM registers are caller-saved.
   sub $0x100, %rsp
   CFI_ADJUST_CFA_OFFSET(0x100)
-  vmovdqu %xmm0, 0x0(%rsp)
-  vmovdqu %xmm1, 0x10(%rsp)
-  vmovdqu %xmm2, 0x20(%rsp)
-  vmovdqu %xmm3, 0x30(%rsp)
-  vmovdqu %xmm4, 0x40(%rsp)
-  vmovdqu %xmm5, 0x50(%rsp)
-  vmovdqu %xmm6, 0x60(%rsp)
-  vmovdqu %xmm7, 0x70(%rsp)
-  vmovdqu %xmm8, 0x80(%rsp)
-  vmovdqu %xmm9, 0x90(%rsp)
-  vmovdqu %xmm10, 0xa0(%rsp)
-  vmovdqu %xmm11, 0xb0(%rsp)
-  vmovdqu %xmm12, 0xc0(%rsp)
-  vmovdqu %xmm13, 0xd0(%rsp)
-  vmovdqu %xmm14, 0xe0(%rsp)
-  vmovdqu %xmm15, 0xf0(%rsp)
+  movdqu %xmm0, 0x0(%rsp)
+  movdqu %xmm1, 0x10(%rsp)
+  movdqu %xmm2, 0x20(%rsp)
+  movdqu %xmm3, 0x30(%rsp)
+  movdqu %xmm4, 0x40(%rsp)
+  movdqu %xmm5, 0x50(%rsp)
+  movdqu %xmm6, 0x60(%rsp)
+  movdqu %xmm7, 0x70(%rsp)
+  movdqu %xmm8, 0x80(%rsp)
+  movdqu %xmm9, 0x90(%rsp)
+  movdqu %xmm10, 0xa0(%rsp)
+  movdqu %xmm11, 0xb0(%rsp)
+  movdqu %xmm12, 0xc0(%rsp)
+  movdqu %xmm13, 0xd0(%rsp)
+  movdqu %xmm14, 0xe0(%rsp)
+  movdqu %xmm15, 0xf0(%rsp)
   # Align stack frame.
   push %rbx  # non-scratch
   CFI_ADJUST_CFA_OFFSET(8)
@@ -78,22 +78,22 @@ ASM_SYMBOL(__tsan_trace_switch_thunk):
   pop %rbx
   CFI_ADJUST_CFA_OFFSET(-8)
   # Restore scratch registers.
-  vmovdqu 0x0(%rsp), %xmm0
-  vmovdqu 0x10(%rsp), %xmm1
-  vmovdqu 0x20(%rsp), %xmm2
-  vmovdqu 0x30(%rsp), %xmm3
-  vmovdqu 0x40(%rsp), %xmm4
-  vmovdqu 0x50(%rsp), %xmm5
-  vmovdqu 0x60(%rsp), %xmm6
-  vmovdqu 0x70(%rsp), %xmm7
-  vmovdqu 0x80(%rsp), %xmm8
-  vmovdqu 0x90(%rsp), %xmm9
-  vmovdqu 0xa0(%rsp), %xmm10
-  vmovdqu 0xb0(%rsp), %xmm11
-  vmovdqu 0xc0(%rsp), %xmm12
-  vmovdqu 0xd0(%rsp), %xmm13
-  vmovdqu 0xe0(%rsp), %xmm14
-  vmovdqu 0xf0(%rsp), %xmm15
+  movdqu 0x0(%rsp), %xmm0
+  movdqu 0x10(%rsp), %xmm1
+  movdqu 0x20(%rsp), %xmm2
+  movdqu 0x30(%rsp), %xmm3
+  movdqu 0x40(%rsp), %xmm4
+  movdqu 0x50(%rsp), %xmm5
+  movdqu 0x60(%rsp), %xmm6
+  movdqu 0x70(%rsp), %xmm7
+  movdqu 0x80(%rsp), %xmm8
+  movdqu 0x90(%rsp), %xmm9
+  movdqu 0xa0(%rsp), %xmm10
+  movdqu 0xb0(%rsp), %xmm11
+  movdqu 0xc0(%rsp), %xmm12
+  movdqu 0xd0(%rsp), %xmm13
+  movdqu 0xe0(%rsp), %xmm14
+  movdqu 0xf0(%rsp), %xmm15
   add $0x100, %rsp
   CFI_ADJUST_CFA_OFFSET(-0x100)
   pop %r11
@@ -163,22 +163,22 @@ ASM_SYMBOL(__tsan_report_race_thunk):
   # All XMM registers are caller-saved.
   sub $0x100, %rsp
   CFI_ADJUST_CFA_OFFSET(0x100)
-  vmovdqu %xmm0, 0x0(%rsp)
-  vmovdqu %xmm1, 0x10(%rsp)
-  vmovdqu %xmm2, 0x20(%rsp)
-  vmovdqu %xmm3, 0x30(%rsp)
-  vmovdqu %xmm4, 0x40(%rsp)
-  vmovdqu %xmm5, 0x50(%rsp)
-  vmovdqu %xmm6, 0x60(%rsp)
-  vmovdqu %xmm7, 0x70(%rsp)
-  vmovdqu %xmm8, 0x80(%rsp)
-  vmovdqu %xmm9, 0x90(%rsp)
-  vmovdqu %xmm10, 0xa0(%rsp)
-  vmovdqu %xmm11, 0xb0(%rsp)
-  vmovdqu %xmm12, 0xc0(%rsp)
-  vmovdqu %xmm13, 0xd0(%rsp)
-  vmovdqu %xmm14, 0xe0(%rsp)
-  vmovdqu %xmm15, 0xf0(%rsp)
+  movdqu %xmm0, 0x0(%rsp)
+  movdqu %xmm1, 0x10(%rsp)
+  movdqu %xmm2, 0x20(%rsp)
+  movdqu %xmm3, 0x30(%rsp)
+  movdqu %xmm4, 0x40(%rsp)
+  movdqu %xmm5, 0x50(%rsp)
+  movdqu %xmm6, 0x60(%rsp)
+  movdqu %xmm7, 0x70(%rsp)
+  movdqu %xmm8, 0x80(%rsp)
+  movdqu %xmm9, 0x90(%rsp)
+  movdqu %xmm10, 0xa0(%rsp)
+  movdqu %xmm11, 0xb0(%rsp)
+  movdqu %xmm12, 0xc0(%rsp)
+  movdqu %xmm13, 0xd0(%rsp)
+  movdqu %xmm14, 0xe0(%rsp)
+  movdqu %xmm15, 0xf0(%rsp)
   # Align stack frame.
   push %rbx  # non-scratch
   CFI_ADJUST_CFA_OFFSET(8)
@@ -196,22 +196,22 @@ ASM_SYMBOL(__tsan_report_race_thunk):
   pop %rbx
   CFI_ADJUST_CFA_OFFSET(-8)
   # Restore scratch registers.
-  vmovdqu 0x0(%rsp), %xmm0
-  vmovdqu 0x10(%rsp), %xmm1
-  vmovdqu 0x20(%rsp), %xmm2
-  vmovdqu 0x30(%rsp), %xmm3
-  vmovdqu 0x40(%rsp), %xmm4
-  vmovdqu 0x50(%rsp), %xmm5
-  vmovdqu 0x60(%rsp), %xmm6
-  vmovdqu 0x70(%rsp), %xmm7
-  vmovdqu 0x80(%rsp), %xmm8
-  vmovdqu 0x90(%rsp), %xmm9
-  vmovdqu 0xa0(%rsp), %xmm10
-  vmovdqu 0xb0(%rsp), %xmm11
-  vmovdqu 0xc0(%rsp), %xmm12
-  vmovdqu 0xd0(%rsp), %xmm13
-  vmovdqu 0xe0(%rsp), %xmm14
-  vmovdqu 0xf0(%rsp), %xmm15
+  movdqu 0x0(%rsp), %xmm0
+  movdqu 0x10(%rsp), %xmm1
+  movdqu 0x20(%rsp), %xmm2
+  movdqu 0x30(%rsp), %xmm3
+  movdqu 0x40(%rsp), %xmm4
+  movdqu 0x50(%rsp), %xmm5
+  movdqu 0x60(%rsp), %xmm6
+  movdqu 0x70(%rsp), %xmm7
+  movdqu 0x80(%rsp), %xmm8
+  movdqu 0x90(%rsp), %xmm9
+  movdqu 0xa0(%rsp), %xmm10
+  movdqu 0xb0(%rsp), %xmm11
+  movdqu 0xc0(%rsp), %xmm12
+  movdqu 0xd0(%rsp), %xmm13
+  movdqu 0xe0(%rsp), %xmm14
+  movdqu 0xf0(%rsp), %xmm15
   add $0x100, %rsp
   CFI_ADJUST_CFA_OFFSET(-0x100)
   pop %r11