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| author | Evan Cheng <evan.cheng@apple.com> | 2007-11-09 01:32:10 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2007-11-09 01:32:10 +0000 |
| commit | cc41586b9d79532172b37e1f44a9077da4b73fc9 (patch) | |
| tree | efeac53c6dd2e713a156d7a62ccc9fc748890d7e /include | |
| parent | 2dfdefd282a04785c4d7b43e37782ace65af2ba6 (diff) | |
| download | external_llvm-cc41586b9d79532172b37e1f44a9077da4b73fc9.zip external_llvm-cc41586b9d79532172b37e1f44a9077da4b73fc9.tar.gz external_llvm-cc41586b9d79532172b37e1f44a9077da4b73fc9.tar.bz2 | |
Much improved pic jumptable codegen:
Then:
call "L1$pb"
"L1$pb":
popl %eax
...
LBB1_1: # entry
imull $4, %ecx, %ecx
leal LJTI1_0-"L1$pb"(%eax), %edx
addl LJTI1_0-"L1$pb"(%ecx,%eax), %edx
jmpl *%edx
.align 2
.set L1_0_set_3,LBB1_3-LJTI1_0
.set L1_0_set_2,LBB1_2-LJTI1_0
.set L1_0_set_5,LBB1_5-LJTI1_0
.set L1_0_set_4,LBB1_4-LJTI1_0
LJTI1_0:
.long L1_0_set_3
.long L1_0_set_2
Now:
call "L1$pb"
"L1$pb":
popl %eax
...
LBB1_1: # entry
addl LJTI1_0-"L1$pb"(%eax,%ecx,4), %eax
jmpl *%eax
.align 2
.set L1_0_set_3,LBB1_3-"L1$pb"
.set L1_0_set_2,LBB1_2-"L1$pb"
.set L1_0_set_5,LBB1_5-"L1$pb"
.set L1_0_set_4,LBB1_4-"L1$pb"
LJTI1_0:
.long L1_0_set_3
.long L1_0_set_2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43924 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/CodeGen/AsmPrinter.h | 11 | ||||
| -rw-r--r-- | include/llvm/Target/TargetLowering.h | 7 |
2 files changed, 12 insertions, 6 deletions
diff --git a/include/llvm/CodeGen/AsmPrinter.h b/include/llvm/CodeGen/AsmPrinter.h index 607aa70..937e9ed 100644 --- a/include/llvm/CodeGen/AsmPrinter.h +++ b/include/llvm/CodeGen/AsmPrinter.h @@ -305,11 +305,12 @@ namespace llvm { bool printColon = false, bool printComment = true) const; - /// printSetLabel - This method prints a set label for the specified - /// MachineBasicBlock - void printSetLabel(unsigned uid, const MachineBasicBlock *MBB) const; - void printSetLabel(unsigned uid, unsigned uid2, - const MachineBasicBlock *MBB) const; + /// printPICJumpTableSetLabel - This method prints a set label for the + /// specified MachineBasicBlock for a jumptable entry. + virtual void printPICJumpTableSetLabel(unsigned uid, + const MachineBasicBlock *MBB) const; + virtual void printPICJumpTableSetLabel(unsigned uid, unsigned uid2, + const MachineBasicBlock *MBB) const; /// printDataDirective - This method prints the asm directive for the /// specified type. diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h index 79af960..ee26579 100644 --- a/include/llvm/Target/TargetLowering.h +++ b/include/llvm/Target/TargetLowering.h @@ -93,7 +93,7 @@ public: /// usesGlobalOffsetTable - Return true if this target uses a GOT for PIC /// codegen. bool usesGlobalOffsetTable() const { return UsesGlobalOffsetTable; } - + /// isSelectExpensive - Return true if the select operation is expensive for /// this target. bool isSelectExpensive() const { return SelectIsExpensive; } @@ -543,6 +543,11 @@ public: return false; } + /// getPICJumpTableRelocaBase - Returns relocation base for the given PIC + /// jumptable. + virtual SDOperand getPICJumpTableRelocBase(SDOperand Table, + SelectionDAG &DAG) const; + //===--------------------------------------------------------------------===// // TargetLowering Optimization Methods // |