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Revert "[CodeGenPrepare] Convert ctpop(X) ==/!= 1 into ctpop(X) u</u> 2/1" (#111932)
Reverts #111284 to fix clang stage2 builds. Investigating... Failed buildbots: https://lab.llvm.org/buildbot/#/builders/76/builds/3576 https://lab.llvm.org/buildbot/#/builders/168/builds/4308 https://lab.llvm.org/buildbot/#/builders/127/builds/1087
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6 files changed

+15
-258
lines changed

6 files changed

+15
-258
lines changed

‎llvm/lib/CodeGen/CodeGenPrepare.cpp

Lines changed: 0 additions & 28 deletions
Original file line numberDiff line numberDiff line change
@@ -2111,31 +2111,6 @@ bool CodeGenPrepare::optimizeURem(Instruction *Rem) {
21112111
return false;
21122112
}
21132113

2114-
/// Some targets have better codegen for `ctpop(X) u< 2` than `ctpop(X) == 1`.
2115-
/// This function converts `ctpop(X) ==/!= 1` into `ctpop(X) u</u> 2/1` if the
2116-
/// result cannot be zero.
2117-
static bool adjustIsPower2Test(CmpInst *Cmp, const TargetLowering &TLI,
2118-
const TargetTransformInfo &TTI,
2119-
const DataLayout &DL) {
2120-
ICmpInst::Predicate Pred;
2121-
if (!match(Cmp, m_ICmp(Pred, m_Intrinsic<Intrinsic::ctpop>(), m_One())))
2122-
return false;
2123-
if (!ICmpInst::isEquality(Pred))
2124-
return false;
2125-
auto *II = cast<IntrinsicInst>(Cmp->getOperand(0));
2126-
2127-
if (isKnownNonZero(II, DL)) {
2128-
if (Pred == ICmpInst::ICMP_EQ) {
2129-
Cmp->setOperand(1, ConstantInt::get(II->getType(), 2));
2130-
Cmp->setPredicate(ICmpInst::ICMP_ULT);
2131-
} else {
2132-
Cmp->setPredicate(ICmpInst::ICMP_UGT);
2133-
}
2134-
return true;
2135-
}
2136-
return false;
2137-
}
2138-
21392114
bool CodeGenPrepare::optimizeCmp(CmpInst *Cmp, ModifyDT &ModifiedDT) {
21402115
if (sinkCmpExpression(Cmp, *TLI))
21412116
return true;
@@ -2155,9 +2130,6 @@ bool CodeGenPrepare::optimizeCmp(CmpInst *Cmp, ModifyDT &ModifiedDT) {
21552130
if (foldFCmpToFPClassTest(Cmp, *TLI, *DL))
21562131
return true;
21572132

2158-
if (adjustIsPower2Test(Cmp, *TLI, *TTI, *DL))
2159-
return true;
2160-
21612133
return false;
21622134
}
21632135

‎llvm/test/CodeGen/AArch64/arm64-popcnt.ll

Lines changed: 7 additions & 61 deletions
Original file line numberDiff line numberDiff line change
@@ -15,7 +15,7 @@ define i32 @cnt32_advsimd(i32 %x) nounwind readnone {
1515
; CHECK-NONEON-LABEL: cnt32_advsimd:
1616
; CHECK-NONEON: // %bb.0:
1717
; CHECK-NONEON-NEXT: lsr w9, w0, #1
18-
; CHECK-NONEON-NEXT: mov w8, #16843009 // =0x1010101
18+
; CHECK-NONEON-NEXT: mov w8, #16843009
1919
; CHECK-NONEON-NEXT: and w9, w9, #0x55555555
2020
; CHECK-NONEON-NEXT: sub w9, w0, w9
2121
; CHECK-NONEON-NEXT: lsr w10, w9, #2
@@ -50,7 +50,7 @@ define i32 @cnt32_advsimd_2(<2 x i32> %x) {
5050
; CHECK-NONEON-LABEL: cnt32_advsimd_2:
5151
; CHECK-NONEON: // %bb.0:
5252
; CHECK-NONEON-NEXT: lsr w9, w0, #1
53-
; CHECK-NONEON-NEXT: mov w8, #16843009 // =0x1010101
53+
; CHECK-NONEON-NEXT: mov w8, #16843009
5454
; CHECK-NONEON-NEXT: and w9, w9, #0x55555555
5555
; CHECK-NONEON-NEXT: sub w9, w0, w9
5656
; CHECK-NONEON-NEXT: lsr w10, w9, #2
@@ -86,7 +86,7 @@ define i64 @cnt64_advsimd(i64 %x) nounwind readnone {
8686
; CHECK-NONEON-LABEL: cnt64_advsimd:
8787
; CHECK-NONEON: // %bb.0:
8888
; CHECK-NONEON-NEXT: lsr x9, x0, #1
89-
; CHECK-NONEON-NEXT: mov x8, #72340172838076673 // =0x101010101010101
89+
; CHECK-NONEON-NEXT: mov x8, #72340172838076673
9090
; CHECK-NONEON-NEXT: and x9, x9, #0x5555555555555555
9191
; CHECK-NONEON-NEXT: sub x9, x0, x9
9292
; CHECK-NONEON-NEXT: lsr x10, x9, #2
@@ -114,7 +114,7 @@ define i32 @cnt32(i32 %x) nounwind readnone noimplicitfloat {
114114
; CHECK-LABEL: cnt32:
115115
; CHECK: // %bb.0:
116116
; CHECK-NEXT: lsr w9, w0, #1
117-
; CHECK-NEXT: mov w8, #16843009 // =0x1010101
117+
; CHECK-NEXT: mov w8, #16843009
118118
; CHECK-NEXT: and w9, w9, #0x55555555
119119
; CHECK-NEXT: sub w9, w0, w9
120120
; CHECK-NEXT: lsr w10, w9, #2
@@ -130,7 +130,7 @@ define i32 @cnt32(i32 %x) nounwind readnone noimplicitfloat {
130130
; CHECK-NONEON-LABEL: cnt32:
131131
; CHECK-NONEON: // %bb.0:
132132
; CHECK-NONEON-NEXT: lsr w9, w0, #1
133-
; CHECK-NONEON-NEXT: mov w8, #16843009 // =0x1010101
133+
; CHECK-NONEON-NEXT: mov w8, #16843009
134134
; CHECK-NONEON-NEXT: and w9, w9, #0x55555555
135135
; CHECK-NONEON-NEXT: sub w9, w0, w9
136136
; CHECK-NONEON-NEXT: lsr w10, w9, #2
@@ -155,7 +155,7 @@ define i64 @cnt64(i64 %x) nounwind readnone noimplicitfloat {
155155
; CHECK-LABEL: cnt64:
156156
; CHECK: // %bb.0:
157157
; CHECK-NEXT: lsr x9, x0, #1
158-
; CHECK-NEXT: mov x8, #72340172838076673 // =0x101010101010101
158+
; CHECK-NEXT: mov x8, #72340172838076673
159159
; CHECK-NEXT: and x9, x9, #0x5555555555555555
160160
; CHECK-NEXT: sub x9, x0, x9
161161
; CHECK-NEXT: lsr x10, x9, #2
@@ -171,7 +171,7 @@ define i64 @cnt64(i64 %x) nounwind readnone noimplicitfloat {
171171
; CHECK-NONEON-LABEL: cnt64:
172172
; CHECK-NONEON: // %bb.0:
173173
; CHECK-NONEON-NEXT: lsr x9, x0, #1
174-
; CHECK-NONEON-NEXT: mov x8, #72340172838076673 // =0x101010101010101
174+
; CHECK-NONEON-NEXT: mov x8, #72340172838076673
175175
; CHECK-NONEON-NEXT: and x9, x9, #0x5555555555555555
176176
; CHECK-NONEON-NEXT: sub x9, x0, x9
177177
; CHECK-NONEON-NEXT: lsr x10, x9, #2
@@ -278,59 +278,5 @@ define i1 @ctpop32_ne_one(i32 %x) nounwind readnone {
278278
ret i1 %cmp
279279
}
280280

281-
define i1 @ctpop32_eq_one_nonzero(i32 %x) {
282-
; CHECK-LABEL: ctpop32_eq_one_nonzero:
283-
; CHECK: // %bb.0: // %entry
284-
; CHECK-NEXT: sub w8, w0, #1
285-
; CHECK-NEXT: tst w0, w8
286-
; CHECK-NEXT: cset w0, eq
287-
; CHECK-NEXT: ret
288-
;
289-
; CHECK-NONEON-LABEL: ctpop32_eq_one_nonzero:
290-
; CHECK-NONEON: // %bb.0: // %entry
291-
; CHECK-NONEON-NEXT: sub w8, w0, #1
292-
; CHECK-NONEON-NEXT: tst w0, w8
293-
; CHECK-NONEON-NEXT: cset w0, eq
294-
; CHECK-NONEON-NEXT: ret
295-
;
296-
; CHECK-CSSC-LABEL: ctpop32_eq_one_nonzero:
297-
; CHECK-CSSC: // %bb.0: // %entry
298-
; CHECK-CSSC-NEXT: sub w8, w0, #1
299-
; CHECK-CSSC-NEXT: tst w0, w8
300-
; CHECK-CSSC-NEXT: cset w0, eq
301-
; CHECK-CSSC-NEXT: ret
302-
entry:
303-
%popcnt = call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)
304-
%cmp = icmp eq i32 %popcnt, 1
305-
ret i1 %cmp
306-
}
307-
308-
define i1 @ctpop32_ne_one_nonzero(i32 %x) {
309-
; CHECK-LABEL: ctpop32_ne_one_nonzero:
310-
; CHECK: // %bb.0: // %entry
311-
; CHECK-NEXT: sub w8, w0, #1
312-
; CHECK-NEXT: tst w0, w8
313-
; CHECK-NEXT: cset w0, ne
314-
; CHECK-NEXT: ret
315-
;
316-
; CHECK-NONEON-LABEL: ctpop32_ne_one_nonzero:
317-
; CHECK-NONEON: // %bb.0: // %entry
318-
; CHECK-NONEON-NEXT: sub w8, w0, #1
319-
; CHECK-NONEON-NEXT: tst w0, w8
320-
; CHECK-NONEON-NEXT: cset w0, ne
321-
; CHECK-NONEON-NEXT: ret
322-
;
323-
; CHECK-CSSC-LABEL: ctpop32_ne_one_nonzero:
324-
; CHECK-CSSC: // %bb.0: // %entry
325-
; CHECK-CSSC-NEXT: sub w8, w0, #1
326-
; CHECK-CSSC-NEXT: tst w0, w8
327-
; CHECK-CSSC-NEXT: cset w0, ne
328-
; CHECK-CSSC-NEXT: ret
329-
entry:
330-
%popcnt = tail call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)
331-
%cmp = icmp ne i32 %popcnt, 1
332-
ret i1 %cmp
333-
}
334-
335281
declare i32 @llvm.ctpop.i32(i32) nounwind readnone
336282
declare i64 @llvm.ctpop.i64(i64) nounwind readnone

‎llvm/test/CodeGen/RISCV/rv32zbb.ll

Lines changed: 0 additions & 39 deletions
Original file line numberDiff line numberDiff line change
@@ -1441,42 +1441,3 @@ define i32 @srai_slli2(i16 signext %0) {
14411441
%3 = sext i16 %sext to i32
14421442
ret i32 %3
14431443
}
1444-
1445-
define i1 @ctpop32_eq_one_nonzero(i32 %x) {
1446-
; RV32I-LABEL: ctpop32_eq_one_nonzero:
1447-
; RV32I: # %bb.0: # %entry
1448-
; RV32I-NEXT: addi a1, a0, -1
1449-
; RV32I-NEXT: and a0, a0, a1
1450-
; RV32I-NEXT: seqz a0, a0
1451-
; RV32I-NEXT: ret
1452-
;
1453-
; RV32ZBB-LABEL: ctpop32_eq_one_nonzero:
1454-
; RV32ZBB: # %bb.0: # %entry
1455-
; RV32ZBB-NEXT: cpop a0, a0
1456-
; RV32ZBB-NEXT: sltiu a0, a0, 2
1457-
; RV32ZBB-NEXT: ret
1458-
entry:
1459-
%popcnt = call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)
1460-
%cmp = icmp eq i32 %popcnt, 1
1461-
ret i1 %cmp
1462-
}
1463-
1464-
define i1 @ctpop32_ne_one_nonzero(i32 %x) {
1465-
; RV32I-LABEL: ctpop32_ne_one_nonzero:
1466-
; RV32I: # %bb.0: # %entry
1467-
; RV32I-NEXT: addi a1, a0, -1
1468-
; RV32I-NEXT: and a0, a0, a1
1469-
; RV32I-NEXT: snez a0, a0
1470-
; RV32I-NEXT: ret
1471-
;
1472-
; RV32ZBB-LABEL: ctpop32_ne_one_nonzero:
1473-
; RV32ZBB: # %bb.0: # %entry
1474-
; RV32ZBB-NEXT: cpop a0, a0
1475-
; RV32ZBB-NEXT: sltiu a0, a0, 2
1476-
; RV32ZBB-NEXT: xori a0, a0, 1
1477-
; RV32ZBB-NEXT: ret
1478-
entry:
1479-
%popcnt = tail call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)
1480-
%cmp = icmp ne i32 %popcnt, 1
1481-
ret i1 %cmp
1482-
}

‎llvm/test/CodeGen/RISCV/rv64zbb.ll

Lines changed: 0 additions & 81 deletions
Original file line numberDiff line numberDiff line change
@@ -1618,84 +1618,3 @@ entry:
16181618
%5 = add nsw i32 %4, %0
16191619
ret i32 %5
16201620
}
1621-
1622-
define i1 @ctpop32_eq_one_nonzero(i32 %x) {
1623-
; RV64I-LABEL: ctpop32_eq_one_nonzero:
1624-
; RV64I: # %bb.0: # %entry
1625-
; RV64I-NEXT: addi a1, a0, -1
1626-
; RV64I-NEXT: and a0, a0, a1
1627-
; RV64I-NEXT: sext.w a0, a0
1628-
; RV64I-NEXT: seqz a0, a0
1629-
; RV64I-NEXT: ret
1630-
;
1631-
; RV64ZBB-LABEL: ctpop32_eq_one_nonzero:
1632-
; RV64ZBB: # %bb.0: # %entry
1633-
; RV64ZBB-NEXT: cpopw a0, a0
1634-
; RV64ZBB-NEXT: sltiu a0, a0, 2
1635-
; RV64ZBB-NEXT: ret
1636-
entry:
1637-
%popcnt = call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)
1638-
%cmp = icmp eq i32 %popcnt, 1
1639-
ret i1 %cmp
1640-
}
1641-
1642-
define i1 @ctpop32_ne_one_nonzero(i32 %x) {
1643-
; RV64I-LABEL: ctpop32_ne_one_nonzero:
1644-
; RV64I: # %bb.0: # %entry
1645-
; RV64I-NEXT: addi a1, a0, -1
1646-
; RV64I-NEXT: and a0, a0, a1
1647-
; RV64I-NEXT: sext.w a0, a0
1648-
; RV64I-NEXT: snez a0, a0
1649-
; RV64I-NEXT: ret
1650-
;
1651-
; RV64ZBB-LABEL: ctpop32_ne_one_nonzero:
1652-
; RV64ZBB: # %bb.0: # %entry
1653-
; RV64ZBB-NEXT: cpopw a0, a0
1654-
; RV64ZBB-NEXT: sltiu a0, a0, 2
1655-
; RV64ZBB-NEXT: xori a0, a0, 1
1656-
; RV64ZBB-NEXT: ret
1657-
entry:
1658-
%popcnt = tail call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)
1659-
%cmp = icmp ne i32 %popcnt, 1
1660-
ret i1 %cmp
1661-
}
1662-
1663-
define i1 @ctpop64_eq_one_nonzero(i64 %x) {
1664-
; RV64I-LABEL: ctpop64_eq_one_nonzero:
1665-
; RV64I: # %bb.0: # %entry
1666-
; RV64I-NEXT: addi a1, a0, -1
1667-
; RV64I-NEXT: and a0, a0, a1
1668-
; RV64I-NEXT: seqz a0, a0
1669-
; RV64I-NEXT: ret
1670-
;
1671-
; RV64ZBB-LABEL: ctpop64_eq_one_nonzero:
1672-
; RV64ZBB: # %bb.0: # %entry
1673-
; RV64ZBB-NEXT: cpop a0, a0
1674-
; RV64ZBB-NEXT: sltiu a0, a0, 2
1675-
; RV64ZBB-NEXT: ret
1676-
entry:
1677-
%popcnt = call range(i64 1, 65) i64 @llvm.ctpop.i64(i64 %x)
1678-
%cmp = icmp eq i64 %popcnt, 1
1679-
ret i1 %cmp
1680-
}
1681-
1682-
define i1 @ctpop32_eq_one_maybezero(i32 %x) {
1683-
; RV64I-LABEL: ctpop32_eq_one_maybezero:
1684-
; RV64I: # %bb.0: # %entry
1685-
; RV64I-NEXT: addiw a1, a0, -1
1686-
; RV64I-NEXT: xor a0, a0, a1
1687-
; RV64I-NEXT: sext.w a0, a0
1688-
; RV64I-NEXT: sltu a0, a1, a0
1689-
; RV64I-NEXT: ret
1690-
;
1691-
; RV64ZBB-LABEL: ctpop32_eq_one_maybezero:
1692-
; RV64ZBB: # %bb.0: # %entry
1693-
; RV64ZBB-NEXT: cpopw a0, a0
1694-
; RV64ZBB-NEXT: addi a0, a0, -1
1695-
; RV64ZBB-NEXT: seqz a0, a0
1696-
; RV64ZBB-NEXT: ret
1697-
entry:
1698-
%popcnt = call range(i32 0, 16) i32 @llvm.ctpop.i32(i32 %x)
1699-
%cmp = icmp eq i32 %popcnt, 1
1700-
ret i1 %cmp
1701-
}

‎llvm/test/CodeGen/X86/ispow2.ll

Lines changed: 2 additions & 43 deletions
Original file line numberDiff line numberDiff line change
@@ -102,7 +102,7 @@ define <4 x i1> @is_pow2_non_zero_4xv64(<4 x i64> %xin) {
102102
; CHECK-AVX512: # %bb.0:
103103
; CHECK-AVX512-NEXT: vporq {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %ymm0, %ymm0
104104
; CHECK-AVX512-NEXT: vpopcntq %ymm0, %ymm0
105-
; CHECK-AVX512-NEXT: vpcmpltq {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %ymm0, %k1
105+
; CHECK-AVX512-NEXT: vpcmpeqq {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %ymm0, %k1
106106
; CHECK-AVX512-NEXT: vpcmpeqd %xmm0, %xmm0, %xmm0
107107
; CHECK-AVX512-NEXT: vmovdqa32 %xmm0, %xmm0 {%k1} {z}
108108
; CHECK-AVX512-NEXT: vzeroupper
@@ -155,7 +155,7 @@ define <4 x i1> @neither_pow2_non_zero_4xv64(<4 x i64> %xin) {
155155
; CHECK-AVX512: # %bb.0:
156156
; CHECK-AVX512-NEXT: vporq {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %ymm0, %ymm0
157157
; CHECK-AVX512-NEXT: vpopcntq %ymm0, %ymm0
158-
; CHECK-AVX512-NEXT: vpcmpgtq {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %ymm0, %k1
158+
; CHECK-AVX512-NEXT: vpcmpneqq {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %ymm0, %k1
159159
; CHECK-AVX512-NEXT: vpcmpeqd %xmm0, %xmm0, %xmm0
160160
; CHECK-AVX512-NEXT: vmovdqa32 %xmm0, %xmm0 {%k1} {z}
161161
; CHECK-AVX512-NEXT: vzeroupper
@@ -220,44 +220,3 @@ define <4 x i1> @neither_pow2_non_zero_4xv64_x_maybe_z(<4 x i64> %x) {
220220
%r = icmp ne <4 x i64> %cnt, <i64 1, i64 1, i64 1, i64 1>
221221
ret <4 x i1> %r
222222
}
223-
224-
225-
define i1 @ctpop32_eq_one_nonzero(i32 %x) {
226-
; CHECK-NOBMI-LABEL: ctpop32_eq_one_nonzero:
227-
; CHECK-NOBMI: # %bb.0: # %entry
228-
; CHECK-NOBMI-NEXT: # kill: def $edi killed $edi def $rdi
229-
; CHECK-NOBMI-NEXT: leal -1(%rdi), %eax
230-
; CHECK-NOBMI-NEXT: testl %eax, %edi
231-
; CHECK-NOBMI-NEXT: sete %al
232-
; CHECK-NOBMI-NEXT: retq
233-
;
234-
; CHECK-BMI2-LABEL: ctpop32_eq_one_nonzero:
235-
; CHECK-BMI2: # %bb.0: # %entry
236-
; CHECK-BMI2-NEXT: blsrl %edi, %eax
237-
; CHECK-BMI2-NEXT: sete %al
238-
; CHECK-BMI2-NEXT: retq
239-
entry:
240-
%popcnt = call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)
241-
%cmp = icmp eq i32 %popcnt, 1
242-
ret i1 %cmp
243-
}
244-
245-
define i1 @ctpop32_ne_one_nonzero(i32 %x) {
246-
; CHECK-NOBMI-LABEL: ctpop32_ne_one_nonzero:
247-
; CHECK-NOBMI: # %bb.0: # %entry
248-
; CHECK-NOBMI-NEXT: # kill: def $edi killed $edi def $rdi
249-
; CHECK-NOBMI-NEXT: leal -1(%rdi), %eax
250-
; CHECK-NOBMI-NEXT: testl %eax, %edi
251-
; CHECK-NOBMI-NEXT: setne %al
252-
; CHECK-NOBMI-NEXT: retq
253-
;
254-
; CHECK-BMI2-LABEL: ctpop32_ne_one_nonzero:
255-
; CHECK-BMI2: # %bb.0: # %entry
256-
; CHECK-BMI2-NEXT: blsrl %edi, %eax
257-
; CHECK-BMI2-NEXT: setne %al
258-
; CHECK-BMI2-NEXT: retq
259-
entry:
260-
%popcnt = tail call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)
261-
%cmp = icmp ne i32 %popcnt, 1
262-
ret i1 %cmp
263-
}

‎llvm/test/CodeGen/X86/known-never-zero.ll

Lines changed: 6 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -555,9 +555,9 @@ define <4 x i32> @smax_known_zero_vec(<4 x i32> %x, <4 x i32> %y) {
555555
; X86-NEXT: por %xmm2, %xmm0
556556
; X86-NEXT: pcmpeqd %xmm1, %xmm1
557557
; X86-NEXT: paddd %xmm0, %xmm1
558-
; X86-NEXT: pand %xmm1, %xmm0
559-
; X86-NEXT: pxor %xmm1, %xmm1
560-
; X86-NEXT: pcmpeqd %xmm1, %xmm0
558+
; X86-NEXT: pxor {{\.?LCPI[0-9]+_[0-9]+}}, %xmm1
559+
; X86-NEXT: pxor %xmm1, %xmm0
560+
; X86-NEXT: pcmpgtd %xmm1, %xmm0
561561
; X86-NEXT: psrld $31, %xmm0
562562
; X86-NEXT: retl
563563
;
@@ -566,10 +566,10 @@ define <4 x i32> @smax_known_zero_vec(<4 x i32> %x, <4 x i32> %y) {
566566
; X64-NEXT: vpmaxsd {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0, %xmm0
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; X64-NEXT: vpcmpeqd %xmm1, %xmm1, %xmm1
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; X64-NEXT: vpaddd %xmm1, %xmm0, %xmm1
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; X64-NEXT: vpand %xmm1, %xmm0, %xmm0
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; X64-NEXT: vpxor %xmm1, %xmm1, %xmm1
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; X64-NEXT: vpxor %xmm1, %xmm0, %xmm0
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; X64-NEXT: vpminud %xmm1, %xmm0, %xmm1
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; X64-NEXT: vpcmpeqd %xmm1, %xmm0, %xmm0
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; X64-NEXT: vpsrld $31, %xmm0, %xmm0
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; X64-NEXT: vpandn {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0, %xmm0
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; X64-NEXT: retq
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%z = call <4 x i32> @llvm.smax.v4i32(<4 x i32> %x, <4 x i32> <i32 54, i32 23, i32 12, i32 1>)
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%r = call <4 x i32> @llvm.ctpop.v4i32(<4 x i32> %z)

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