Changeset 243293 in webkit for trunk/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.cpp

Timestamp:

Mar 21, 2019, 9:29:32 AM (6 years ago)

Author:

[email protected]

Message:

[JSC][x86] Drop support for x87 floating point
​https://bugs.webkit.org/show_bug.cgi?id=194853

Patch by Xan Lopez <Xan Lopez> on 2019-03-21
Reviewed by Don Olmstead.

Source/JavaScriptCore:

Require SSE2 throughout the codebase, and remove x87 support where
it was optionally available. SSE2 detection happens at compile
time through a static_assert.

• assembler/MacroAssemblerX86.h:

(JSC::MacroAssemblerX86::storeDouble):
(JSC::MacroAssemblerX86::moveDoubleToInts):
(JSC::MacroAssemblerX86::supportsFloatingPoint):
(JSC::MacroAssemblerX86::supportsFloatingPointTruncate):
(JSC::MacroAssemblerX86::supportsFloatingPointSqrt):
(JSC::MacroAssemblerX86::supportsFloatingPointAbs):

• assembler/MacroAssemblerX86Common.cpp:
• assembler/MacroAssemblerX86Common.h:

(JSC::MacroAssemblerX86Common::moveDouble):
(JSC::MacroAssemblerX86Common::loadDouble):
(JSC::MacroAssemblerX86Common::loadFloat):
(JSC::MacroAssemblerX86Common::storeDouble):
(JSC::MacroAssemblerX86Common::storeFloat):
(JSC::MacroAssemblerX86Common::convertDoubleToFloat):
(JSC::MacroAssemblerX86Common::convertFloatToDouble):
(JSC::MacroAssemblerX86Common::addDouble):
(JSC::MacroAssemblerX86Common::addFloat):
(JSC::MacroAssemblerX86Common::divDouble):
(JSC::MacroAssemblerX86Common::divFloat):
(JSC::MacroAssemblerX86Common::subDouble):
(JSC::MacroAssemblerX86Common::subFloat):
(JSC::MacroAssemblerX86Common::mulDouble):
(JSC::MacroAssemblerX86Common::mulFloat):
(JSC::MacroAssemblerX86Common::convertInt32ToDouble):
(JSC::MacroAssemblerX86Common::convertInt32ToFloat):
(JSC::MacroAssemblerX86Common::branchDouble):
(JSC::MacroAssemblerX86Common::branchFloat):
(JSC::MacroAssemblerX86Common::compareDouble):
(JSC::MacroAssemblerX86Common::compareFloat):
(JSC::MacroAssemblerX86Common::branchTruncateDoubleToInt32):
(JSC::MacroAssemblerX86Common::truncateDoubleToInt32):
(JSC::MacroAssemblerX86Common::truncateFloatToInt32):
(JSC::MacroAssemblerX86Common::branchConvertDoubleToInt32):
(JSC::MacroAssemblerX86Common::branchDoubleNonZero):
(JSC::MacroAssemblerX86Common::branchDoubleZeroOrNaN):
(JSC::MacroAssemblerX86Common::lshiftPacked):
(JSC::MacroAssemblerX86Common::rshiftPacked):
(JSC::MacroAssemblerX86Common::orPacked):
(JSC::MacroAssemblerX86Common::move32ToFloat):
(JSC::MacroAssemblerX86Common::moveFloatTo32):
(JSC::MacroAssemblerX86Common::moveConditionallyDouble):
(JSC::MacroAssemblerX86Common::moveConditionallyFloat):

• offlineasm/x86.rb:
• runtime/MathCommon.cpp:

(JSC::operationMathPow):

Tools:

Force SSE2 on x86/32bit builds.

• Scripts/webkitdirs.pm:

(generateBuildSystemFromCMakeProject):

File:

• trunk/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.cpp (modified) (1 diff)

trunk/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.cpp

@@ -168 +168 @@
 static_assert(sizeof(Probe::State) == PROBE_SIZE, "Probe::State::size's matches ctiMasmProbeTrampoline");
 static_assert((PROBE_EXECUTOR_OFFSET + PTR_SIZE) <= (PROBE_SIZE + OUT_SIZE), "Must have room after ProbeContext to stash the probe handler");
+
+#if CPU(X86)
+// SSE2 is a hard requirement on x86.
+static_assert(isSSE2Present(), "SSE2 support is required in JavaScriptCore");
+#endif
 
 #undef PROBE_OFFSETOF