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| author | Simon Hausmann <simon.hausmann@digia.com> | 2012-11-22 09:09:45 +0100 |
|---|---|---|
| committer | Simon Hausmann <simon.hausmann@digia.com> | 2012-11-22 09:10:13 +0100 |
| commit | 470286ecfe79d59df14944e5b5d34630fc739391 (patch) | |
| tree | 43983212872e06cebefd2ae474418fa2908ca54c /Source/JavaScriptCore/offlineasm | |
| parent | 23037105e948c2065da5a937d3a2396b0ff45c1e (diff) | |
| download | qtwebkit-470286ecfe79d59df14944e5b5d34630fc739391.tar.gz | |
Imported WebKit commit e89504fa9195b2063b2530961d4b73dd08de3242 (http://svn.webkit.org/repository/webkit/trunk@135485)
Change-Id: I03774e5ac79721c13ffa30d152537a74d0b12e66
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Diffstat (limited to 'Source/JavaScriptCore/offlineasm')
| -rw-r--r-- | Source/JavaScriptCore/offlineasm/x86.rb | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/Source/JavaScriptCore/offlineasm/x86.rb b/Source/JavaScriptCore/offlineasm/x86.rb index 67cbd14b0..f78b43912 100644 --- a/Source/JavaScriptCore/offlineasm/x86.rb +++ b/Source/JavaScriptCore/offlineasm/x86.rb @@ -764,11 +764,16 @@ class Instruction when "ci2d" $asm.puts "cvtsi2sd #{operands[0].x86Operand(:int)}, #{operands[1].x86Operand(:double)}" when "bdeq" - isUnordered = LocalLabel.unique("bdeq") $asm.puts "ucomisd #{operands[0].x86Operand(:double)}, #{operands[1].x86Operand(:double)}" - $asm.puts "jp #{LabelReference.new(codeOrigin, isUnordered).asmLabel}" - $asm.puts "je #{LabelReference.new(codeOrigin, operands[2]).asmLabel}" - isUnordered.lower("X86") + if operands[0] == operands[1] + # This is just a jump ordered, which is a jnp. + $asm.puts "jnp #{operands[2].asmLabel}" + else + isUnordered = LocalLabel.unique("bdeq") + $asm.puts "jp #{LabelReference.new(codeOrigin, isUnordered).asmLabel}" + $asm.puts "je #{LabelReference.new(codeOrigin, operands[2]).asmLabel}" + isUnordered.lower("X86") + end when "bdneq" handleX86DoubleBranch("jne", :normal) when "bdgt" @@ -782,14 +787,19 @@ class Instruction when "bdequn" handleX86DoubleBranch("je", :normal) when "bdnequn" - isUnordered = LocalLabel.unique("bdnequn") - isEqual = LocalLabel.unique("bdnequn") $asm.puts "ucomisd #{operands[0].x86Operand(:double)}, #{operands[1].x86Operand(:double)}" - $asm.puts "jp #{LabelReference.new(codeOrigin, isUnordered).asmLabel}" - $asm.puts "je #{LabelReference.new(codeOrigin, isEqual).asmLabel}" - isUnordered.lower("X86") - $asm.puts "jmp #{operands[2].asmLabel}" - isEqual.lower("X86") + if operands[0] == operands[1] + # This is just a jump unordered, which is a jp. + $asm.puts "jp #{operands[2].asmLabel}" + else + isUnordered = LocalLabel.unique("bdnequn") + isEqual = LocalLabel.unique("bdnequn") + $asm.puts "jp #{LabelReference.new(codeOrigin, isUnordered).asmLabel}" + $asm.puts "je #{LabelReference.new(codeOrigin, isEqual).asmLabel}" + isUnordered.lower("X86") + $asm.puts "jmp #{operands[2].asmLabel}" + isEqual.lower("X86") + end when "bdgtun" handleX86DoubleBranch("jb", :reverse) when "bdgtequn" @@ -1115,7 +1125,7 @@ class Instruction $asm.puts "movd #{operands[0].x86Operand(:double)}, #{operands[1].x86Operand(:int)}" $asm.puts "movsd #{operands[0].x86Operand(:double)}, %xmm7" $asm.puts "psrlq $32, %xmm7" - $asm.puts "movsd %xmm7, #{operands[2].x86Operand(:int)}" + $asm.puts "movd %xmm7, #{operands[2].x86Operand(:int)}" when "fq2d" $asm.puts "movd #{operands[0].x86Operand(:quad)}, #{operands[1].x86Operand(:double)}" when "fd2q" |