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For PR1553:

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Make the AsmParser auto-upgrade the old zext and sext
keywords for parameter attributes and handle the 
end-of-line ambiguity.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40610 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2007-07-31 02:57:37 +00:00
parent 6f62af6e64
commit 1d3d230861
3 changed files with 20 additions and 0 deletions
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6
lib/AsmParser/Lexer.l
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@ -177,6 +177,8 @@ HexFPConstant 0x[0-9A-Fa-f]+
*/ */
HexIntConstant [us]0x[0-9A-Fa-f]+ HexIntConstant [us]0x[0-9A-Fa-f]+
/* WSNL - shorthand for newline followed by whitespace */
WSNL [ \r\t\n]*$
%% %%
{Comment} { /* Ignore comments for now */ } {Comment} { /* Ignore comments for now */ }
@ -234,6 +236,10 @@ noreturn { return NORETURN; }
noalias { return NOALIAS; } noalias { return NOALIAS; }
byval { return BYVAL; } byval { return BYVAL; }
nest { return NEST; } nest { return NEST; }
sext{WSNL} { // For auto-upgrade only, drop in LLVM 3.0
return SIGNEXT; }
zext{WSNL} { // For auto-upgrade only, drop in LLVM 3.0
return ZEROEXT; }
void { RET_TY(Type::VoidTy, VOID); } void { RET_TY(Type::VoidTy, VOID); }
float { RET_TY(Type::FloatTy, FLOAT); } float { RET_TY(Type::FloatTy, FLOAT); }

2
lib/AsmParser/llvmAsmParser.y
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@ -1225,7 +1225,9 @@ OptCallingConv : /*empty*/ { $$ = CallingConv::C; } |
}; };
ParamAttr : ZEROEXT { $$ = ParamAttr::ZExt; } ParamAttr : ZEROEXT { $$ = ParamAttr::ZExt; }
| ZEXT { $$ = ParamAttr::ZExt; }
| SIGNEXT { $$ = ParamAttr::SExt; } | SIGNEXT { $$ = ParamAttr::SExt; }
| SEXT { $$ = ParamAttr::SExt; }
| INREG { $$ = ParamAttr::InReg; } | INREG { $$ = ParamAttr::InReg; }
| SRET { $$ = ParamAttr::StructRet; } | SRET { $$ = ParamAttr::StructRet; }
| NOALIAS { $$ = ParamAttr::NoAlias; } | NOALIAS { $$ = ParamAttr::NoAlias; }

12
test/Assembler/2007-07-30-AutoUpgradeZextSext.ll Normal file
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@ -0,0 +1,12 @@
; Test that upgrading zext/sext attributes to zeroext and signext
; works correctly.
; PR1553
; RUN: llvm-as < %s > /dev/null
define i32 @bar() {
%t = call i8 @foo( i8 10 sext ) zext
%x = zext i8 %t to i32
ret i32 %x
}
declare i8 @foo(i8 signext ) zeroext