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Switch to ImmLeaf (which can be used by FastISel) for a few more common ARM/Thumb2 patterns.

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llvm-svn: 130552
This commit is contained in:
Eli Friedman 2011-04-29 22:48:03 +00:00
parent 60fb94e8bf
commit 1940912660
4 changed files with 36 additions and 7 deletions
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1
lib/Target/ARM/ARMFastISel.cpp
View File

@ -14,6 +14,7 @@
//===----------------------------------------------------------------------===//
#include "ARM.h"
#include "ARMAddressingModes.h"
#include "ARMBaseInstrInfo.h"
#include "ARMCallingConv.h"
#include "ARMRegisterInfo.h"

4
lib/Target/ARM/ARMInstrInfo.td
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@ -412,7 +412,9 @@ def shift_so_reg : Operand<i32>, // reg reg imm
// so_imm - Match a 32-bit shifter_operand immediate operand, which is an
// 8-bit immediate rotated by an arbitrary number of bits.
def so_imm : Operand<i32>, PatLeaf<(imm), [{ return Pred_so_imm(N); }]> {
def so_imm : Operand<i32>, ImmLeaf<i32, [{
return ARM_AM::getSOImmVal(Imm) != -1;
}]> {
let EncoderMethod = "getSOImmOpValue";
let PrintMethod = "printSOImmOperand";
}

4
lib/Target/ARM/ARMInstrThumb2.td
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@ -44,7 +44,9 @@ def t2_so_imm_neg_XFORM : SDNodeXForm<imm, [{
// t2_so_imm - Match a 32-bit immediate operand, which is an
// 8-bit immediate rotated by an arbitrary number of bits, or an 8-bit
// immediate splatted into multiple bytes of the word.
def t2_so_imm : Operand<i32>, PatLeaf<(imm), [{ return Pred_t2_so_imm(N); }]> {
def t2_so_imm : Operand<i32>, ImmLeaf<i32, [{
return ARM_AM::getT2SOImmVal(Imm) != -1;
}]> {
let EncoderMethod = "getT2SOImmOpValue";
}

34
test/CodeGen/ARM/fast-isel.ll
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@ -1,8 +1,7 @@
; RUN: llc < %s -O0 -fast-isel-abort -mtriple=armv7-apple-darwin
; RUN: llc < %s -O0 -fast-isel-abort -mtriple=thumbv7-apple-darwin
; RUN: llc < %s -O0 -fast-isel-abort -mtriple=armv7-apple-darwin | FileCheck %s --check-prefix=ARM
; RUN: llc < %s -O0 -fast-isel-abort -mtriple=thumbv7-apple-darwin | FileCheck %s --check-prefix=THUMB
; Very basic fast-isel functionality.
define i32 @add(i32 %a, i32 %b) nounwind {
entry:
%a.addr = alloca i32, align 4
@ -15,6 +14,7 @@ entry:
ret i32 %add
}
; Check truncate to bool
define void @test1(i32 %tmp) nounwind {
entry:
%tobool = trunc i32 %tmp to i1
@ -26,6 +26,30 @@ br label %if.end
if.end: ; preds = %if.then, %entry
ret void
; CHECK: test1:
; CHECK: tst r0, #1
; ARM: test1:
; ARM: tst r0, #1
; THUMB: test1:
; THUMB: tst.w r0, #1
}
; Check some simple operations with immediates
define void @test2(i32 %tmp, i32* %ptr) nounwind {
; THUMB: test2:
; ARM: test2:
b1:
%b = add i32 %tmp, 4096
store i32 %b, i32* %ptr
br label %b2
; THUMB: add.w {{.*}} #4096
; ARM: add {{.*}} #1, #20
b2:
%c = or i32 %tmp, 4
store i32 %c, i32* %ptr
ret void
; THUMB: orr {{.*}} #4
; ARM: orr {{.*}} #4
}