[llvm-commits] [llvm] r40610 - in /llvm/trunk: lib/AsmParser/Lexer.l lib/AsmParser/llvmAsmParser.y test/Assembler/2007-07-30-AutoUpgradeZextSext.ll

[Reid Spencer]

Author: reid
Date: Mon Jul 30 21:57:37 2007
New Revision: 40610

URL: http://llvm.org/viewvc/llvm-project?rev=40610&view=rev
Log:
For PR1553:
Make the AsmParser auto-upgrade the old zext and sext
keywords for parameter attributes and handle the 
end-of-line ambiguity.

Added:
    llvm/trunk/test/Assembler/2007-07-30-AutoUpgradeZextSext.ll
Modified:
    llvm/trunk/lib/AsmParser/Lexer.l
    llvm/trunk/lib/AsmParser/llvmAsmParser.y

Modified: llvm/trunk/lib/AsmParser/Lexer.l
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/AsmParser/Lexer.l?rev=40610&r1=40609&r2=40610&view=diff

==============================================================================
--- llvm/trunk/lib/AsmParser/Lexer.l (original)
+++ llvm/trunk/lib/AsmParser/Lexer.l Mon Jul 30 21:57:37 2007
@@ -177,6 +177,8 @@
  */
 HexIntConstant [us]0x[0-9A-Fa-f]+
 
+/* WSNL - shorthand for newline followed by whitespace */
+WSNL [ \r\t\n]*$
 %%
 
 {Comment}       { /* Ignore comments for now */ }
@@ -234,6 +236,10 @@
 noalias         { return NOALIAS; }
 byval           { return BYVAL; }
 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);  }
 float           { RET_TY(Type::FloatTy, FLOAT); }

Modified: llvm/trunk/lib/AsmParser/llvmAsmParser.y
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/AsmParser/llvmAsmParser.y?rev=40610&r1=40609&r2=40610&view=diff

==============================================================================
--- llvm/trunk/lib/AsmParser/llvmAsmParser.y (original)
+++ llvm/trunk/lib/AsmParser/llvmAsmParser.y Mon Jul 30 21:57:37 2007
@@ -1225,7 +1225,9 @@
                  };
 
 ParamAttr     : ZEROEXT { $$ = ParamAttr::ZExt;      }
+              | ZEXT    { $$ = ParamAttr::ZExt;      }
               | SIGNEXT { $$ = ParamAttr::SExt;      }
+              | SEXT    { $$ = ParamAttr::SExt;      }
               | INREG   { $$ = ParamAttr::InReg;     }
               | SRET    { $$ = ParamAttr::StructRet; }
               | NOALIAS { $$ = ParamAttr::NoAlias;   }

Added: llvm/trunk/test/Assembler/2007-07-30-AutoUpgradeZextSext.ll
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Assembler/2007-07-30-AutoUpgradeZextSext.ll?rev=40610&view=auto

==============================================================================
--- llvm/trunk/test/Assembler/2007-07-30-AutoUpgradeZextSext.ll (added)
+++ llvm/trunk/test/Assembler/2007-07-30-AutoUpgradeZextSext.ll Mon Jul 30 
21:57:37 2007
@@ -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


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