6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-08-05 13:26:55 +00:00
Code Issues Projects Releases Wiki Activity

[PowerPC] Support absolute branches

Browse Source 
There is currently only limited support for the "absolute" variants
of branch instructions.  This patch adds support for the absolute
variants of all branches that are currently otherwise supported.

This requires adding new fixup types so that the correct variant
of relocation type can be selected by the object writer.

While the compiler will continue to usually choose the relative
branch variants, this will allow the asm parser to fully support
the absolute branches, with either immediate (numerical) or
symbolic target addresses.

No change in code generation intended.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184721 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ulrich Weigand
2013-06-24 11:03:33 +00:00
parent 9068d5310c
commit 9679c47a07
14 changed files with 344 additions and 76 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/Target/PowerPC/PPCInstr64Bit.td
View File

@@ -102,7 +102,7 @@ let isCall = 1, PPC970_Unit = 7, Defs = [LR8] in {
def BL8 : IForm<18, 0, 1, (outs), (ins calltarget:$func),
"bl $func", BrB, []>; // See Pat patterns below.
def BLA8 : IForm<18, 1, 1, (outs), (ins aaddr:$func),
def BLA8 : IForm<18, 1, 1, (outs), (ins abscalltarget:$func),
"bla $func", BrB, [(PPCcall (i64 imm:$func))]>;
}
let Uses = [RM], isCodeGenOnly = 1 in {
@@ -119,7 +119,7 @@ let isCall = 1, PPC970_Unit = 7, Defs = [LR8] in {
"bl $func($sym)\n\tnop", BrB, []>;
def BLA8_NOP : IForm_and_DForm_4_zero<18, 1, 1, 24,
(outs), (ins aaddr:$func),
(outs), (ins abscalltarget:$func),
"bla $func\n\tnop", BrB,
[(PPCcall_nop (i64 imm:$func))]>;
}
@@ -198,7 +198,7 @@ def TCRETURNdi8 :Pseudo< (outs),
[]>;
let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1, Uses = [RM] in
def TCRETURNai8 :Pseudo<(outs), (ins aaddr:$func, i32imm:$offset),
def TCRETURNai8 :Pseudo<(outs), (ins abscalltarget:$func, i32imm:$offset),
"#TC_RETURNa8 $func $offset",
[(PPCtc_return (i64 imm:$func), imm:$offset)]>;
@@ -224,7 +224,7 @@ def TAILB8 : IForm<18, 0, 0, (outs), (ins calltarget:$dst),
let isBranch = 1, isTerminator = 1, hasCtrlDep = 1, PPC970_Unit = 7,
isBarrier = 1, isCall = 1, isReturn = 1, Uses = [RM] in
def TAILBA8 : IForm<18, 0, 0, (outs), (ins aaddr:$dst),
def TAILBA8 : IForm<18, 0, 0, (outs), (ins abscalltarget:$dst),
"ba $dst", BrB,
[]>;