[llvm-branch-commits] [llvm-branch] r105742 - in /llvm/branches/Apple/Morbo: ./ lib/CodeGen/OptimizeExts.cpp lib/Target/ARM/ARMInstrFormats.td
Bill Wendling
isanbard at gmail.com
Wed Jun 9 12:02:46 PDT 2010
Author: void
Date: Wed Jun 9 14:02:46 2010
New Revision: 105742
URL: http://llvm.org/viewvc/llvm-project?rev=105742&view=rev
Log:
$ svn merge -c 105741 https://llvm.org/svn/llvm-project/llvm/trunk
--- Merging r105741 into '.':
U lib/CodeGen/OptimizeExts.cpp
Modified:
llvm/branches/Apple/Morbo/ (props changed)
llvm/branches/Apple/Morbo/lib/CodeGen/OptimizeExts.cpp
llvm/branches/Apple/Morbo/lib/Target/ARM/ARMInstrFormats.td (props changed)
Propchange: llvm/branches/Apple/Morbo/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Wed Jun 9 14:02:46 2010
@@ -1,3 +1,3 @@
/llvm/branches/Apple/Hermes:96832,96835,96858,96870,96876,96879,104427,104930,104971
-/llvm/trunk:98602,98604,98612,98615-98616,98675,98686,98743-98744,98768,98773,98778,98780,98810,98835,98839,98845,98855,98862,98881,98920,98977,98980,99032-99033,99043,99196,99223,99263,99282-99284,99306,99319-99321,99324,99336,99378,99418,99423,99429,99440,99455,99463,99465,99469,99484,99490,99492-99494,99507,99524,99537,99539-99540,99544,99570,99575,99598,99620,99629-99630,99636,99671,99692,99695,99697,99699,99722,99816,99835-99836,99845-99846,99848,99850,99855,99879,99881-99883,99895,99899,99910,99916,99919,99952-99954,99957,99959,99974-99975,99982,99984-99986,99988-99989,99992-99993,99995,99997-99999,100016,100035,100037-100038,100042,100044,100056,100072,100074,100078,100081-100090,100092,100094-100095,100116,100134,100184,100209,100214-100218,100220-100221,100223-100225,100231,100250,100252,100257,100261,100304,100332,100353,100384,100454-100455,100457,100466,100478,100480,100487,100494,100497,100505,100521,100553,100568,100584,100592,100609-100610,100636,100710,100736
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+/llvm/trunk:98602,98604,98612,98615-98616,98675,98686,98743-98744,98768,98773,98778,98780,98810,98835,98839,98845,98855,98862,98881,98920,98977,98980,99032-99033,99043,99196,99223,99263,99282-99284,99306,99319-99321,99324,99336,99378,99418,99423,99429,99440,99455,99463,99465,99469,99484,99490,99492-99494,99507,99524,99537,99539-99540,99544,99570,99575,99598,99620,99629-99630,99636,99671,99692,99695,99697,99699,99722,99816,99835-99836,99845-99846,99848,99850,99855,99879,99881-99883,99895,99899,99910,99916,99919,99952-99954,99957,99959,99974-99975,99982,99984-99986,99988-99989,99992-99993,99995,99997-99999,100016,100035,100037-100038,100042,100044,100056,100072,100074,100078,100081-100090,100092,100094-100095,100116,100134,100184,100209,100214-100218,100220-100221,100223-100225,100231,100250,100252,100257,100261,100304,100332,100353,100384,100454-100455,100457,100466,100478,100480,100487,100494,100497,100505,100521,100553,100568,100584,100592,100609-100610,100636,100710,100736
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/llvm-gcc-4.2/trunk:104182
Modified: llvm/branches/Apple/Morbo/lib/CodeGen/OptimizeExts.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/Apple/Morbo/lib/CodeGen/OptimizeExts.cpp?rev=105742&r1=105741&r2=105742&view=diff
==============================================================================
--- llvm/branches/Apple/Morbo/lib/CodeGen/OptimizeExts.cpp (original)
+++ llvm/branches/Apple/Morbo/lib/CodeGen/OptimizeExts.cpp Wed Jun 9 14:02:46 2010
@@ -118,6 +118,26 @@
continue;
}
+ // It's an error to translate this:
+ //
+ // %reg1025 = <sext> %reg1024
+ // ...
+ // %reg1026 = SUBREG_TO_REG 0, %reg1024, 4
+ //
+ // into this:
+ //
+ // %reg1025 = <sext> %reg1024
+ // ...
+ // %reg1027 = EXTRACT_SUBREG %reg1025, 4
+ // %reg1026 = SUBREG_TO_REG 0, %reg1027, 4
+ //
+ // The problem here is that SUBREG_TO_REG is there to assert that an
+ // implicit zext occurs. It doesn't insert a zext instruction. If we allow
+ // the EXTRACT_SUBREG here, it will give us the value after the <sext>,
+ // not the original value of %reg1024 before <sext>.
+ if (UseMI->getOpcode() == TargetOpcode::SUBREG_TO_REG)
+ continue;
+
MachineBasicBlock *UseMBB = UseMI->getParent();
if (UseMBB == MBB) {
// Local uses that come after the extension.
Propchange: llvm/branches/Apple/Morbo/lib/Target/ARM/ARMInstrFormats.td
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Wed Jun 9 14:02:46 2010
@@ -1,2 +1,2 @@
/llvm/branches/Apple/Hermes/lib/Target/ARM/ARMInstrFormats.td:104930
-/llvm/trunk/lib/Target/ARM/ARMInstrFormats.td:98980,103126,104182,104233,104236,104265,104274,104302,104338,104412,104419,104524,104531,104640,104646,104649,104655-104656,104661,104664,104705-104706,104720,104722,104732,104737,104740,104785,104848,104858,104872,104884,104900,105092,105285,105292,105295,105360,105387,105490,105505
+/llvm/trunk/lib/Target/ARM/ARMInstrFormats.td:98980,103126,104182,104233,104236,104265,104274,104302,104338,104412,104419,104524,104531,104640,104646,104649,104655-104656,104661,104664,104705-104706,104720,104722,104732,104737,104740,104785,104848,104858,104872,104884,104900,105092,105285,105292,105295,105360,105387,105490,105505,105741
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