[llvm-commits] [llvm] r166749 - in /llvm/trunk: lib/Target/Mips/Mips16InstrInfo.td test/CodeGen/Mips/i32k.ll

[Reed Kotler]

Author: rkotler
Date: Thu Oct 25 22:09:34 2012
New Revision: 166749

URL: http://llvm.org/viewvc/llvm-project?rev=166749&view=rev
Log:
implement large (>16 bit) constant loading.


Added:
    llvm/trunk/test/CodeGen/Mips/i32k.ll
Modified:
    llvm/trunk/lib/Target/Mips/Mips16InstrInfo.td

Modified: llvm/trunk/lib/Target/Mips/Mips16InstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/Mips16InstrInfo.td?rev=166749&r1=166748&r2=166749&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/Mips16InstrInfo.td (original)
+++ llvm/trunk/lib/Target/Mips/Mips16InstrInfo.td Thu Oct 25 22:09:34 2012
@@ -971,6 +971,10 @@
   Mips16Pat<(cond_op CPU16Regs:$rx, imm_type:$imm16),
             (I CPU16Regs:$rx, imm_type:$imm16)>;
 
+// Large (>16 bit) immediate loads
+def : Mips16Pat<(i32 imm:$imm),
+                (OrRxRxRy16 (SllX16 (LiRxImmX16 (HI16 imm:$imm)), 16),
+                (LiRxImmX16 (LO16 imm:$imm)))>;
 
 //
 // Some branch conditional patterns are not generated by llvm at this time.

Added: llvm/trunk/test/CodeGen/Mips/i32k.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/Mips/i32k.ll?rev=166749&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/Mips/i32k.ll (added)
+++ llvm/trunk/test/CodeGen/Mips/i32k.ll Thu Oct 25 22:09:34 2012
@@ -0,0 +1,17 @@
+; RUN: llc  -march=mipsel -mcpu=mips16 -relocation-model=pic -O3 < %s | FileCheck %s -check-prefix=16a
+; RUN: llc  -march=mipsel -mcpu=mips16 -relocation-model=pic -O3 < %s | FileCheck %s -check-prefix=16b
+
+ at .str = private unnamed_addr constant [4 x i8] c"%i\0A\00", align 1
+
+define i32 @main() nounwind {
+entry:
+  %call = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([4 x i8]* @.str, i32 0, i32 0), i32 1075344593) nounwind
+; 16a:	li	${{[0-9]+}}, 29905
+; 16b:	li	${{[0-9]+}}, 16408
+  %call1 = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([4 x i8]* @.str, i32 0, i32 0), i32 -1075344593) nounwind
+; 16a:	li	${{[0-9]+}}, 49127
+; 16b:	li	${{[0-9]+}}, 35631
+  ret i32 0
+}
+
+declare i32 @printf(i8* nocapture, ...) nounwind