BinOpFrag<(add node:$LHS, (sext_inreg node:$RHS,i16))>>;
def t2SXTAB16 : T2I_exta_rrot_np<0b010, "sxtab16">;
+// A simple right-shift can also be used in most cases (the exception is the
+// SXTH operations with a rotate of 24: there the non-contiguous bits are
+// relevant).
+def : Pat<(add rGPR:$Rn, (sext_inreg (srl rGPR:$Rm, rot_imm:$rot), i8)),
+ (t2SXTAB rGPR:$Rn, rGPR:$Rm, rot_imm:$rot)>,
+ Requires<[HasT2ExtractPack, IsThumb2]>;
+def : Pat<(add rGPR:$Rn, (sext_inreg (srl rGPR:$Rm, imm8_or_16:$rot), i16)),
+ (t2SXTAH rGPR:$Rn, rGPR:$Rm, rot_imm:$rot)>,
+ Requires<[HasT2ExtractPack, IsThumb2]>;
+
// Zero extenders
let AddedComplexity = 16 in {
def t2UXTAH : T2I_exta_rrot<0b001, "uxtah",
BinOpFrag<(add node:$LHS, (and node:$RHS, 0xFFFF))>>;
def t2UXTAB16 : T2I_exta_rrot_np<0b011, "uxtab16">;
+
+def : Pat<(add rGPR:$Rn, (and (srl rGPR:$Rm, rot_imm:$rot), 0xFF)),
+ (t2UXTAB rGPR:$Rn, rGPR:$Rm, rot_imm:$rot)>,
+ Requires<[HasT2ExtractPack, IsThumb2]>;
+def : Pat<(add rGPR:$Rn, (and (srl rGPR:$Rm, imm8_or_16:$rot), 0xFFFF)),
+ (t2UXTAH rGPR:$Rn, rGPR:$Rm, rot_imm:$rot)>,
+ Requires<[HasT2ExtractPack, IsThumb2]>;
}
+
//===----------------------------------------------------------------------===//
// Arithmetic Instructions.
//
; RUN: | FileCheck %s
define i32 @test0(i8 %A) {
-; CHECK: test0
+; CHECK-LABEL: test0:
; CHECK: sxtb r0, r0
%B = sext i8 %A to i32
ret i32 %B
}
define signext i8 @test1(i32 %A) {
-; CHECK: test1
+; CHECK-LABEL: test1:
; CHECK: lsrs r0, r0, #8
; CHECK: sxtb r0, r0
%B = lshr i32 %A, 8
}
define signext i32 @test2(i32 %A, i32 %X) {
-; CHECK: test2
-; CHECK: lsrs r0, r0, #8
-; CHECK: sxtab r0, r1, r0
+; CHECK-LABEL: test2:
+; CHECK: sxtab r0, r1, r0, ror #8
%B = lshr i32 %A, 8
%C = shl i32 %A, 24
%D = or i32 %B, %C
%G = add i32 %F, %X
ret i32 %G
}
+
+define i32 @test3(i32 %A, i32 %X) {
+; CHECK-LABEL: test3:
+; CHECK: sxtah r0, r0, r1, ror #8
+ %X.hi = lshr i32 %X, 8
+ %X.trunc = trunc i32 %X.hi to i16
+ %addend = sext i16 %X.trunc to i32
+
+ %sum = add i32 %A, %addend
+ ret i32 %sum
+}
}
define zeroext i32 @test3(i32 %A.u) {
-; A8: test3
+; A8-LABEL: test3
; A8: ubfx r0, r0, #8, #16
%B.u = lshr i32 %A.u, 8
%C.u = shl i32 %A.u, 24
%F.u = zext i16 %E.u to i32
ret i32 %F.u
}
+
+define i32 @test4(i32 %A, i32 %X) {
+; A8-LABEL: test4:
+; A8: uxtab r0, r0, r1, ror #16
+ %X.hi = lshr i32 %X, 16
+ %X.trunc = trunc i32 %X.hi to i8
+ %addend = zext i8 %X.trunc to i32
+
+ %sum = add i32 %A, %addend
+ ret i32 %sum
+}
+
+define i32 @test5(i32 %A, i32 %X) {
+; A8-LABEL: test5:
+; A8: uxtah r0, r0, r1, ror #8
+ %X.hi = lshr i32 %X, 8
+ %X.trunc = trunc i32 %X.hi to i16
+ %addend = zext i16 %X.trunc to i32
+
+ %sum = add i32 %A, %addend
+ ret i32 %sum
+}