Author: Armin Rigo <[email protected]>
Branch:
Changeset: r48678:5478d1f631fa
Date: 2011-11-03 08:36 +0100
http://bitbucket.org/pypy/pypy/changeset/5478d1f631fa/
Log: Add tests for two special cases of "MOV" in INSN().
diff --git a/pypy/jit/backend/x86/regloc.py b/pypy/jit/backend/x86/regloc.py
--- a/pypy/jit/backend/x86/regloc.py
+++ b/pypy/jit/backend/x86/regloc.py
@@ -298,6 +298,8 @@
else:
# For this case, we should not need the scratch register more
than here.
self._load_scratch(val2)
+ if name == 'MOV' and loc1 is X86_64_SCRATCH_REG:
+ return # don't need a dummy "MOV r11, r11"
INSN(self, loc1, X86_64_SCRATCH_REG)
def invoke(self, codes, val1, val2):
diff --git a/pypy/jit/backend/x86/test/test_regloc.py
b/pypy/jit/backend/x86/test/test_regloc.py
--- a/pypy/jit/backend/x86/test/test_regloc.py
+++ b/pypy/jit/backend/x86/test/test_regloc.py
@@ -176,6 +176,30 @@
# ------------------------------------------------------------
+ def test_MOV_64bit_constant_into_r11(self):
+ base_constant = 0xFEDCBA9876543210
+ cb = LocationCodeBuilder64()
+ cb.MOV(r11, imm(base_constant))
+
+ expected_instructions = (
+ # mov r11, 0xFEDCBA9876543210
+ '\x49\xBB\x10\x32\x54\x76\x98\xBA\xDC\xFE'
+ )
+ assert cb.getvalue() == expected_instructions
+
+ def test_MOV_64bit_address_into_r11(self):
+ base_addr = 0xFEDCBA9876543210
+ cb = LocationCodeBuilder64()
+ cb.MOV(r11, heap(base_addr))
+
+ expected_instructions = (
+ # mov r11, 0xFEDCBA9876543210
+ '\x49\xBB\x10\x32\x54\x76\x98\xBA\xDC\xFE' +
+ # mov r11, [r11]
+ '\x4D\x8B\x1B'
+ )
+ assert cb.getvalue() == expected_instructions
+
def test_MOV_immed32_into_64bit_address_1(self):
immed = -0x01234567
base_addr = 0xFEDCBA9876543210
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