Remove ARM isel hacks that fold large immediates into a pair of add, sub, and,

[oota-llvm.git] / test / CodeGen / Thumb2 / machine-licm.ll

diff --git a/test/CodeGen/Thumb2/machine-licm.ll b/test/CodeGen/Thumb2/machine-licm.ll
index 14d04a4d8f89c789b22a9f5ac5bba87954eb1de8..37a15ff7b5226eec36200f8bb4a1497add68393a 100644 (file)
--- a/test/CodeGen/Thumb2/machine-licm.ll
+++ b/test/CodeGen/Thumb2/machine-licm.ll
@@ -77,10 +77,49 @@ bb2:
 }
 
 ; CHECK-NOT: LCPI1_0:
-; CHECK: .subsections_via_symbols
 
 declare <4 x float> @llvm.arm.neon.vld1.v4f32(i8*, i32) nounwind readonly
 
 declare void @llvm.arm.neon.vst1.v4f32(i8*, <4 x float>, i32) nounwind
 
 declare <4 x float> @llvm.arm.neon.vmaxs.v4f32(<4 x float>, <4 x float>) nounwind readnone
+
+; rdar://8241368
+; isel should not fold immediate into eor's which would have prevented LICM.
+define zeroext i16 @t3(i8 zeroext %data, i16 zeroext %crc) nounwind readnone {
+; CHECK: t3:
+bb.nph:
+; CHECK: bb.nph
+; CHECK: movw {{(r[0-9])|(lr)}}, #32768
+; CHECK: movs {{(r[0-9])|(lr)}}, #8
+; CHECK: movw [[REGISTER:(r[0-9])|(lr)]], #16386
+; CHECK: movw {{(r[0-9])|(lr)}}, #65534
+; CHECK: movt {{(r[0-9])|(lr)}}, #65535
+  br label %bb
+
+bb:                                               ; preds = %bb, %bb.nph
+; CHECK: bb
+; CHECK: eor.w {{(r[0-9])|(lr)}}, {{(r[0-9])|(lr)}}, [[REGISTER]]
+; CHECK: eor.w
+; CHECK-NOT: eor
+; CHECK: and
+  %data_addr.013 = phi i8 [ %data, %bb.nph ], [ %8, %bb ] ; <i8> [#uses=2]
+  %crc_addr.112 = phi i16 [ %crc, %bb.nph ], [ %crc_addr.2, %bb ] ; <i16> [#uses=3]
+  %i.011 = phi i8 [ 0, %bb.nph ], [ %7, %bb ]     ; <i8> [#uses=1]
+  %0 = trunc i16 %crc_addr.112 to i8              ; <i8> [#uses=1]
+  %1 = xor i8 %data_addr.013, %0                  ; <i8> [#uses=1]
+  %2 = and i8 %1, 1                               ; <i8> [#uses=1]
+  %3 = icmp eq i8 %2, 0                           ; <i1> [#uses=2]
+  %4 = xor i16 %crc_addr.112, 16386               ; <i16> [#uses=1]
+  %crc_addr.0 = select i1 %3, i16 %crc_addr.112, i16 %4 ; <i16> [#uses=1]
+  %5 = lshr i16 %crc_addr.0, 1                    ; <i16> [#uses=2]
+  %6 = or i16 %5, -32768                          ; <i16> [#uses=1]
+  %crc_addr.2 = select i1 %3, i16 %5, i16 %6      ; <i16> [#uses=2]
+  %7 = add i8 %i.011, 1                           ; <i8> [#uses=2]
+  %8 = lshr i8 %data_addr.013, 1                  ; <i8> [#uses=1]
+  %exitcond = icmp eq i8 %7, 8                    ; <i1> [#uses=1]
+  br i1 %exitcond, label %bb8, label %bb
+
+bb8:                                              ; preds = %bb
+  ret i16 %crc_addr.2
+}