[llvm-commits] [llvm] r79484 - in /llvm/trunk: lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp test/CodeGen/X86/2009-08-19-inline-asm-a-modifier.ll
Dale Johannesen
dalej at apple.com
Wed Aug 19 15:44:41 PDT 2009
Author: johannes
Date: Wed Aug 19 17:44:41 2009
New Revision: 79484
URL: http://llvm.org/viewvc/llvm-project?rev=79484&view=rev
Log:
Handle 'a' modifier in X86 asms. PR 4742.
Added:
llvm/trunk/test/CodeGen/X86/2009-08-19-inline-asm-a-modifier.ll
Modified:
llvm/trunk/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
Modified: llvm/trunk/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp?rev=79484&r1=79483&r2=79484&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp (original)
+++ llvm/trunk/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp Wed Aug 19 17:44:41 2009
@@ -620,6 +620,18 @@
switch (ExtraCode[0]) {
default: return true; // Unknown modifier.
+ case 'a': // This is an address. Currently only 'i' and 'r' are expected.
+ if (MO.isImm()) {
+ O << MO.getImm();
+ return false;
+ } else if (MO.isReg()) {
+ O << '(';
+ printOperand(MI, OpNo);
+ O << ')';
+ return false;
+ }
+ return true;
+
case 'c': // Don't print "$" before a global var name or constant.
if (MO.isImm())
O << MO.getImm();
Added: llvm/trunk/test/CodeGen/X86/2009-08-19-inline-asm-a-modifier.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/2009-08-19-inline-asm-a-modifier.ll?rev=79484&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/2009-08-19-inline-asm-a-modifier.ll (added)
+++ llvm/trunk/test/CodeGen/X86/2009-08-19-inline-asm-a-modifier.ll Wed Aug 19 17:44:41 2009
@@ -0,0 +1,18 @@
+; RUN: llvm-as < %s | llc | grep {%gs:6}
+; RUN: llvm-as < %s | llc | grep {%gs:\\\(%*\\\)}
+; ModuleID = 'asm.c'
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "i386-apple-darwin9.6"
+
+define i32 @main() nounwind {
+entry:
+ %asmtmp.i = tail call i16 asm "movw\09%gs:${1:a}, ${0:w}", "=r,ir,~{dirflag},~{fpsr},~{flags}"(i32 6) nounwind ; <i16> [#uses=1]
+ %0 = zext i16 %asmtmp.i to i32 ; <i32> [#uses=1]
+ ret i32 %0
+}
+
+define zeroext i16 @readgsword2(i32 %address) nounwind {
+entry:
+ %asmtmp = tail call i16 asm "movw\09%gs:${1:a}, ${0:w}", "=r,ir,~{dirflag},~{fpsr},~{flags}"(i32 %address) nounwind ; <i16> [#uses=1]
+ ret i16 %asmtmp
+}
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