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diff src/cpu/x86/vm/vm_version_x86.cpp @ 17913:1eba0601f0dd

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8041957: -XX:UseAVX=0 cause assert(UseAVX) failed Summary: temporary set UseAVX=1 and UseSSE=2 in generate_get_cpu_info() Reviewed-by: twisti
author kvn
date Tue, 29 Apr 2014 12:20:53 -0700
parents 0118c8c7b80f
children 78bbf4d43a14
line wrap: on
line diff
--- a/src/cpu/x86/vm/vm_version_x86.cpp	Tue Apr 29 10:29:56 2014 -0700
+++ b/src/cpu/x86/vm/vm_version_x86.cpp	Tue Apr 29 12:20:53 2014 -0700
@@ -263,6 +263,10 @@
     // and check upper YMM bits after it.
     //
     VM_Version::set_avx_cpuFeatures(); // Enable temporary to pass asserts
+    intx saved_useavx = UseAVX;
+    intx saved_usesse = UseSSE;
+    UseAVX = 1;
+    UseSSE = 2;
 
     // load value into all 32 bytes of ymm7 register
     __ movl(rcx, VM_Version::ymm_test_value());
@@ -292,6 +296,8 @@
 #endif
 
     VM_Version::clean_cpuFeatures();
+    UseAVX = saved_useavx;
+    UseSSE = saved_usesse;
 
     //
     // cpuid(0x7) Structured Extended Features