let ParserMatchClass = imm0_4095_neg_asmoperand;
}
-def imm0_255_neg : PatLeaf<(i32 imm), [{
- return (uint32_t)(-N->getZExtValue()) < 255;
+def imm1_255_neg : PatLeaf<(i32 imm), [{
+ uint32_t Val = -N->getZExtValue();
+ return (Val > 0 && Val < 255);
}], imm_neg_XFORM>;
def imm0_255_not : PatLeaf<(i32 imm), [{
// The AddedComplexity preferences the first variant over the others since
// it can be shrunk to a 16-bit wide encoding, while the others cannot.
let AddedComplexity = 1 in
-def : T2Pat<(add GPR:$src, imm0_255_neg:$imm),
- (t2SUBri GPR:$src, imm0_255_neg:$imm)>;
+def : T2Pat<(add GPR:$src, imm1_255_neg:$imm),
+ (t2SUBri GPR:$src, imm1_255_neg:$imm)>;
def : T2Pat<(add GPR:$src, t2_so_imm_neg:$imm),
(t2SUBri GPR:$src, t2_so_imm_neg:$imm)>;
def : T2Pat<(add GPR:$src, imm0_4095_neg:$imm),
(t2SUBrr GPR:$src, (t2MOVi16 (imm_neg_XFORM imm:$imm)))>;
let AddedComplexity = 1 in
-def : T2Pat<(ARMaddc rGPR:$src, imm0_255_neg:$imm),
- (t2SUBSri rGPR:$src, imm0_255_neg:$imm)>;
+def : T2Pat<(ARMaddc rGPR:$src, imm1_255_neg:$imm),
+ (t2SUBSri rGPR:$src, imm1_255_neg:$imm)>;
def : T2Pat<(ARMaddc rGPR:$src, t2_so_imm_neg:$imm),
(t2SUBSri rGPR:$src, t2_so_imm_neg:$imm)>;
def : T2Pat<(ARMaddc rGPR:$src, imm0_65535_neg:$imm),
--- /dev/null
+; RUN: llc < %s -mtriple=thumbv7-apple-ios | FileCheck %s
+
+;CHECK: foo
+;CHECK: adds
+;CHECK-NEXT: adc
+;CHECK-NEXT: bx
+
+;rdar://12028498
+
+define i32 @foo() nounwind ssp {
+entry:
+ %tmp2 = zext i32 3 to i64
+ br label %bug_block
+
+bug_block:
+ %tmp410 = and i64 1031, 1647010
+ %tmp411 = and i64 %tmp2, -211
+ %tmp412 = shl i64 %tmp410, %tmp2
+ %tmp413 = shl i64 %tmp411, %tmp2
+ %tmp415 = and i64 %tmp413, 1
+ %tmp420 = xor i64 0, %tmp415
+ %tmp421 = and i64 %tmp412, %tmp415
+ %tmp422 = shl i64 %tmp421, 1
+ br label %finish
+
+finish:
+ %tmp423 = lshr i64 %tmp422, 32
+ %tmp424 = trunc i64 %tmp423 to i32
+ ret i32 %tmp424
+}
+