-; RUN: llc -mtriple=x86_64-apple-macosx -mcpu=nocona < %s -disable-copyprop=false | FileCheck %s
+; RUN: llc -mtriple=x86_64-apple-macosx -mcpu=nocona -verify-machineinstrs < %s | FileCheck %s
; After tail duplication, two copies in an early exit BB can be cancelled out.
; rdar://10640363
define i32 @t1(i32 %a, i32 %b) nounwind {
entry:
-; CHECK: t1:
-; CHECK: jne
+; CHECK-LABEL: t1:
+; CHECK: je [[LABEL:.*BB.*]]
%cmp1 = icmp eq i32 %b, 0
br i1 %cmp1, label %while.end, label %while.body
-; CHECK: BB
+; CHECK: [[LABEL]]:
; CHECK-NOT: mov
; CHECK: ret
; rdar://10428165
define <8 x i16> @t2(<8 x i16> %T0, <8 x i16> %T1) nounwind readnone {
entry:
-; CHECK: t2:
+; CHECK-LABEL: t2:
; CHECK-NOT: movdqa
%tmp8 = shufflevector <8 x i16> %T0, <8 x i16> %T1, <8 x i32> < i32 undef, i32 undef, i32 7, i32 2, i32 8, i32 undef, i32 undef , i32 undef >
ret <8 x i16> %tmp8
}
+
+define i32 @t3(i64 %a, i64 %b) nounwind {
+entry:
+; CHECK-LABEL: t3:
+; CHECK: je [[LABEL:.*BB.*]]
+ %cmp1 = icmp eq i64 %b, 0
+ br i1 %cmp1, label %while.end, label %while.body
+
+; CHECK: [[LABEL]]:
+; CHECK-NOT: mov
+; CHECK: ret
+
+while.body: ; preds = %entry, %while.body
+ %a.addr.03 = phi i64 [ %b.addr.02, %while.body ], [ %a, %entry ]
+ %b.addr.02 = phi i64 [ %rem, %while.body ], [ %b, %entry ]
+ %rem = srem i64 %a.addr.03, %b.addr.02
+ %cmp = icmp eq i64 %rem, 0
+ br i1 %cmp, label %while.end, label %while.body
+
+while.end: ; preds = %while.body, %entry
+ %a.addr.0.lcssa = phi i64 [ %a, %entry ], [ %b.addr.02, %while.body ]
+ %t = trunc i64 %a.addr.0.lcssa to i32
+ ret i32 %t
+}
+
+; Check that copy propagation does not kill thing like:
+; dst = copy src <-- do not kill that.
+; ... = op1 dst<undef>
+; ... = op2 dst <-- this is used here.
+;
+; CHECK-LABEL: foo:
+; CHECK: psllw $7,
+; CHECK: psllw $7,
+; CHECK-NEXT: pand
+; CHECK-NEXT: pcmpgtb
+; CHECK-NEXT: pand %xmm{{[0-9]+}}, [[SRC:%xmm[0-9]+]]
+; Machine propagation used to delete the first copy as the
+; first few uses were <undef>.
+; CHECK-NEXT: movdqa [[SRC]], [[CPY1:%xmm[0-9]+]]
+; CHECK-NEXT: movdqa [[SRC]], [[CPY2:%xmm[0-9]+]]
+; CHECK-NEXT: punpckhbw [[SRC]],
+; Check that CPY1 is not redefined.
+; CHECK-NOT: , [[CPY1]]
+; undef use, we do not care.
+; CHECK: punpcklwd [[CPY1]],
+; Check that CPY1 is not redefined.
+; CHECK-NOT: , [[CPY1]]
+; CHECK: punpcklbw [[CPY2]], [[CPY2]]
+; CHECK-NEXT: punpckhwd [[CPY2]], [[CPY2]]
+; CHECK-NEXT pslld $31, [[CPY2]]
+; Check that CPY1 is not redefined.
+; CHECK-NOT: , [[CPY1]]
+; CHECK: punpcklbw [[CPY1]], [[CPY1]]
+; CHECK-NEXT: punpcklwd [[CPY1]], [[CPY1]]
+; CHECK-NEXT pslld $31, [[CPY1]]
+define <16 x float> @foo(<16 x float> %x) {
+bb:
+ %v3 = icmp slt <16 x i32> undef, zeroinitializer
+ %v14 = zext <16 x i1> %v3 to <16 x i32>
+ %v16 = fcmp olt <16 x float> %x, zeroinitializer
+ %v17 = sext <16 x i1> %v16 to <16 x i32>
+ %v18 = zext <16 x i1> %v16 to <16 x i32>
+ %v19 = xor <16 x i32> %v14, %v18
+ %v20 = or <16 x i32> %v17, undef
+ %v21 = fptosi <16 x float> %x to <16 x i32>
+ %v22 = sitofp <16 x i32> %v21 to <16 x float>
+ %v69 = fcmp ogt <16 x float> %v22, zeroinitializer
+ %v75 = and <16 x i1> %v69, %v3
+ %v77 = bitcast <16 x float> %v22 to <16 x i32>
+ %v79 = sext <16 x i1> %v75 to <16 x i32>
+ %v80 = and <16 x i32> undef, %v79
+ %v81 = xor <16 x i32> %v77, %v80
+ %v82 = and <16 x i32> undef, %v81
+ %v83 = xor <16 x i32> %v19, %v82
+ %v84 = and <16 x i32> %v83, %v20
+ %v85 = xor <16 x i32> %v19, %v84
+ %v86 = bitcast <16 x i32> %v85 to <16 x float>
+ ret <16 x float> %v86
+}