[llvm-commits] [llvm] r146900 - in /llvm/trunk: lib/Target/Mips/Mips64InstrInfo.td lib/Target/Mips/MipsInstrInfo.td test/CodeGen/Mips/fcopysign.ll test/CodeGen/Mips/mips64imm.ll
Akira Hatanaka
ahatanaka at mips.com
Mon Dec 19 12:21:18 PST 2011
Author: ahatanak
Date: Mon Dec 19 14:21:18 2011
New Revision: 146900
URL: http://llvm.org/viewvc/llvm-project?rev=146900&view=rev
Log:
Add patterns for matching immediates whose lower 16-bit is cleared. These
patterns emit a single LUi instruction instead of a pair of LUi and ORi.
Modified:
llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td
llvm/trunk/lib/Target/Mips/MipsInstrInfo.td
llvm/trunk/test/CodeGen/Mips/fcopysign.ll
llvm/trunk/test/CodeGen/Mips/mips64imm.ll
Modified: llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td?rev=146900&r1=146899&r2=146900&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td (original)
+++ llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td Mon Dec 19 14:21:18 2011
@@ -225,6 +225,8 @@
(DADDiu ZERO_64, imm:$in)>;
def : Pat<(i64 immZExt16:$in),
(ORi64 ZERO_64, imm:$in)>;
+def : Pat<(i64 immLUiOpnd:$in),
+ (LUi64 (HI16 imm:$in))>;
// 32-bit immediates
def : Pat<(i64 immSExt32:$imm),
Modified: llvm/trunk/lib/Target/Mips/MipsInstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MipsInstrInfo.td?rev=146900&r1=146899&r2=146900&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/MipsInstrInfo.td (original)
+++ llvm/trunk/lib/Target/Mips/MipsInstrInfo.td Mon Dec 19 14:21:18 2011
@@ -219,6 +219,12 @@
return (uint64_t)N->getZExtValue() == (unsigned short)N->getZExtValue();
}], LO16>;
+// Immediate can be loaded with LUi (32-bit int with lower 16-bit cleared).
+def immLUiOpnd : PatLeaf<(imm), [{
+ int64_t Val = N->getSExtValue();
+ return isInt<32>(Val) && !(Val & 0xffff);
+}]>;
+
// shamt field must fit in 5 bits.
def immZExt5 : ImmLeaf<i32, [{return Imm == (Imm & 0x1f);}]>;
@@ -933,6 +939,8 @@
(ADDiu ZERO, imm:$in)>;
def : Pat<(i32 immZExt16:$in),
(ORi ZERO, imm:$in)>;
+def : Pat<(i32 immLUiOpnd:$in),
+ (LUi (HI16 imm:$in))>;
// Arbitrary immediates
def : Pat<(i32 imm:$imm),
Modified: llvm/trunk/test/CodeGen/Mips/fcopysign.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/Mips/fcopysign.ll?rev=146900&r1=146899&r2=146900&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/Mips/fcopysign.ll (original)
+++ llvm/trunk/test/CodeGen/Mips/fcopysign.ll Mon Dec 19 14:21:18 2011
@@ -5,9 +5,8 @@
define double @func0(double %d0, double %d1) nounwind readnone {
entry:
; MIPS32-EL: func0:
-; MIPS32-EL: lui $[[T1:[0-9]+]], 32768
-; MIPS32-EL: ori $[[MSK1:[0-9]+]], $[[T1]], 0
; MIPS32-EL: mfc1 $[[HI0:[0-9]+]], $f15
+; MIPS32-EL: lui $[[MSK1:[0-9]+]], 32768
; MIPS32-EL: and $[[AND1:[0-9]+]], $[[HI0]], $[[MSK1]]
; MIPS32-EL: lui $[[T0:[0-9]+]], 32767
; MIPS32-EL: ori $[[MSK0:[0-9]+]], $[[T0]], 65535
@@ -18,9 +17,8 @@
; MIPS32-EL: mtc1 $[[LO0]], $f0
; MIPS32-EL: mtc1 $[[OR]], $f1
;
-; MIPS32-EB: lui $[[T1:[0-9]+]], 32768
-; MIPS32-EB: ori $[[MSK1:[0-9]+]], $[[T1]], 0
; MIPS32-EB: mfc1 $[[HI1:[0-9]+]], $f14
+; MIPS32-EB: lui $[[MSK1:[0-9]+]], 32768
; MIPS32-EB: and $[[AND1:[0-9]+]], $[[HI1]], $[[MSK1]]
; MIPS32-EB: lui $[[T0:[0-9]+]], 32767
; MIPS32-EB: ori $[[MSK0:[0-9]+]], $[[T0]], 65535
@@ -46,9 +44,8 @@
define float @func1(float %f0, float %f1) nounwind readnone {
entry:
; MIPS32-EL: func1:
-; MIPS32-EL: lui $[[T1:[0-9]+]], 32768
-; MIPS32-EL: ori $[[MSK1:[0-9]+]], $[[T1]], 0
; MIPS32-EL: mfc1 $[[ARG1:[0-9]+]], $f14
+; MIPS32-EL: lui $[[MSK1:[0-9]+]], 32768
; MIPS32-EL: and $[[T3:[0-9]+]], $[[ARG1]], $[[MSK1]]
; MIPS32-EL: lui $[[T0:[0-9]+]], 32767
; MIPS32-EL: ori $[[MSK0:[0-9]+]], $[[T0]], 65535
Modified: llvm/trunk/test/CodeGen/Mips/mips64imm.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/Mips/mips64imm.ll?rev=146900&r1=146899&r2=146900&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/Mips/mips64imm.ll (original)
+++ llvm/trunk/test/CodeGen/Mips/mips64imm.ll Mon Dec 19 14:21:18 2011
@@ -1,5 +1,13 @@
; RUN: llc -march=mips64el -mcpu=mips64 < %s | FileCheck %s
+define i32 @foo1() nounwind readnone {
+entry:
+; CHECK: foo1
+; CHECK: lui ${{[0-9]+}}, 4660
+; CHECK-NOT: ori
+ ret i32 305397760
+}
+
define i64 @foo3() nounwind readnone {
entry:
; CHECK: foo3
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