f4fb854811
If the instruction was previously deleted, it should not be treated as an external user. This fixes cost estimation and removes dead extractelement instructions. Differential Revision: https://reviews.llvm.org/D107106
74 lines
3.5 KiB
LLVM
74 lines
3.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -mtriple=i386-linux-gnu -slp-vectorizer -S %s | FileCheck %s
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%struct.a = type { [2 x i64] }
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@a = external global %struct.a
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@b = external global %struct.a
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@c = external global %struct.a
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define void @f(i1 %x) #0 {
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; CHECK-LABEL: @f(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = load <2 x i64>, <2 x i64>* bitcast (%struct.a* @a to <2 x i64>*), align 8
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; CHECK-NEXT: br i1 [[X:%.*]], label [[WHILE_BODY_LR_PH:%.*]], label [[WHILE_END:%.*]]
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; CHECK: while.body.lr.ph:
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; CHECK-NEXT: [[TMP1:%.*]] = extractelement <2 x i64> [[TMP0]], i32 1
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; CHECK-NEXT: [[ICMP_A1:%.*]] = icmp eq i64 [[TMP1]], 0
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; CHECK-NEXT: [[TMP2:%.*]] = load <2 x i64>, <2 x i64>* bitcast (%struct.a* @b to <2 x i64>*), align 8
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; CHECK-NEXT: [[TMP3:%.*]] = insertelement <2 x i1> poison, i1 [[ICMP_A1]], i32 0
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; CHECK-NEXT: [[TMP4:%.*]] = insertelement <2 x i1> [[TMP3]], i1 [[ICMP_A1]], i32 1
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; CHECK-NEXT: [[TMP5:%.*]] = select <2 x i1> [[TMP4]], <2 x i64> [[TMP2]], <2 x i64> [[TMP0]]
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; CHECK-NEXT: br label [[WHILE_END]]
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; CHECK: while.end:
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; CHECK-NEXT: [[TMP6:%.*]] = phi <2 x i64> [ [[TMP0]], [[ENTRY:%.*]] ], [ [[TMP5]], [[WHILE_BODY_LR_PH]] ]
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; CHECK-NEXT: [[TMP7:%.*]] = load <2 x i64>, <2 x i64>* bitcast (%struct.a* @c to <2 x i64>*), align 8
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; CHECK-NEXT: [[TMP8:%.*]] = extractelement <2 x i64> [[TMP6]], i32 0
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; CHECK-NEXT: [[ICMP_D0:%.*]] = icmp eq i64 [[TMP8]], 0
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; CHECK-NEXT: br i1 [[ICMP_D0]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: [[AND0_TMP:%.*]] = and i64 [[TMP8]], 8
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; CHECK-NEXT: [[TMP9:%.*]] = insertelement <2 x i64> poison, i64 [[AND0_TMP]], i32 0
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; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x i64> [[TMP6]], i32 1
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; CHECK-NEXT: [[TMP11:%.*]] = insertelement <2 x i64> [[TMP9]], i64 [[TMP10]], i32 1
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; CHECK-NEXT: [[TMP12:%.*]] = and <2 x i64> [[TMP11]], [[TMP7]]
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; CHECK-NEXT: store <2 x i64> [[TMP12]], <2 x i64>* bitcast (%struct.a* @a to <2 x i64>*), align 8
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; CHECK-NEXT: br label [[IF_END]]
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; CHECK: if.end:
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; CHECK-NEXT: ret void
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;
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entry:
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%a0 = load i64, i64* getelementptr inbounds (%struct.a, %struct.a* @a, i32 0, i32 0, i32 0), align 8
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%a1 = load i64, i64* getelementptr inbounds (%struct.a, %struct.a* @a, i32 0, i32 0, i32 1), align 8
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br i1 %x, label %while.body.lr.ph, label %while.end
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while.body.lr.ph:
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%icmp.a1 = icmp eq i64 %a1, 0
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%b0 = load i64, i64* getelementptr inbounds (%struct.a, %struct.a* @b, i32 0, i32 0, i32 0), align 8
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%b1 = load i64, i64* getelementptr inbounds (%struct.a, %struct.a* @b, i32 0, i32 0, i32 1), align 8
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%c0 = select i1 %icmp.a1, i64 %b0, i64 %a0
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%c1 = select i1 %icmp.a1, i64 %b1, i64 %a1
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br label %while.end
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while.end:
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%d0 = phi i64 [ %a0, %entry ], [ %c0, %while.body.lr.ph ]
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%d1 = phi i64 [ %a1, %entry ], [ %c1, %while.body.lr.ph ]
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%e0 = load i64, i64* getelementptr inbounds (%struct.a, %struct.a* @c, i32 0, i32 0, i32 0), align 8
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%e1 = load i64, i64* getelementptr inbounds (%struct.a, %struct.a* @c, i32 0, i32 0, i32 1), align 8
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%icmp.d0 = icmp eq i64 %d0, 0
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br i1 %icmp.d0, label %if.end, label %if.then
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if.then:
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%and0.tmp = and i64 %d0, 8
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%and0 = and i64 %and0.tmp, %e0
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%and1 = and i64 %e1, %d1
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store i64 %and0, i64* getelementptr inbounds (%struct.a, %struct.a* @a, i32 0, i32 0, i32 0), align 8
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store i64 %and1, i64* getelementptr inbounds (%struct.a, %struct.a* @a, i32 0, i32 0, i32 1), align 8
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br label %if.end
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if.end:
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ret void
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}
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attributes #0 = { "target-features"="+sse2" }
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