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bb4b1d9adf
isSignBitCheck could be changed to take a pointer param to avoid the 'UnusedBit' ugliness. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281231 91177308-0d34-0410-b5e6-96231b3b80d8
48 lines
2.0 KiB
LLVM
48 lines
2.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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define <4 x i32> @psignd_3(<4 x i32> %a, <4 x i32> %b) {
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; CHECK-LABEL: @psignd_3(
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; CHECK-NEXT: [[SUB:%.*]] = sub nsw <4 x i32> zeroinitializer, %a
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; CHECK-NEXT: [[B_LOBIT:%.*]] = ashr <4 x i32> %b, <i32 31, i32 31, i32 31, i32 31>
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; CHECK-NEXT: [[T1:%.*]] = xor <4 x i32> [[B_LOBIT]], <i32 -1, i32 -1, i32 -1, i32 -1>
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; CHECK-NEXT: [[T2:%.*]] = and <4 x i32> %a, [[T1]]
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; CHECK-NEXT: [[T3:%.*]] = and <4 x i32> [[B_LOBIT]], [[SUB]]
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; CHECK-NEXT: [[COND:%.*]] = or <4 x i32> [[T2]], [[T3]]
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; CHECK-NEXT: ret <4 x i32> [[COND]]
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;
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%cmp = icmp slt <4 x i32> %b, zeroinitializer
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%sext = sext <4 x i1> %cmp to <4 x i32>
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%sub = sub nsw <4 x i32> zeroinitializer, %a
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%t0 = icmp slt <4 x i32> %sext, zeroinitializer
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%sext3 = sext <4 x i1> %t0 to <4 x i32>
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%t1 = xor <4 x i32> %sext3, <i32 -1, i32 -1, i32 -1, i32 -1>
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%t2 = and <4 x i32> %a, %t1
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%t3 = and <4 x i32> %sext3, %sub
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%cond = or <4 x i32> %t2, %t3
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ret <4 x i32> %cond
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}
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define <4 x i32> @test1(<4 x i32> %a, <4 x i32> %b) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[SUB:%.*]] = sub nsw <4 x i32> zeroinitializer, %a
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; CHECK-NEXT: [[B_LOBIT:%.*]] = ashr <4 x i32> %b, <i32 31, i32 31, i32 31, i32 31>
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; CHECK-NEXT: [[B_LOBIT_NOT:%.*]] = xor <4 x i32> [[B_LOBIT]], <i32 -1, i32 -1, i32 -1, i32 -1>
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; CHECK-NEXT: [[T2:%.*]] = and <4 x i32> [[B_LOBIT]], %a
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; CHECK-NEXT: [[T3:%.*]] = and <4 x i32> [[B_LOBIT_NOT]], [[SUB]]
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; CHECK-NEXT: [[COND:%.*]] = or <4 x i32> [[T2]], [[T3]]
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; CHECK-NEXT: ret <4 x i32> [[COND]]
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;
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%cmp = icmp sgt <4 x i32> %b, <i32 -1, i32 -1, i32 -1, i32 -1>
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%sext = sext <4 x i1> %cmp to <4 x i32>
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%sub = sub nsw <4 x i32> zeroinitializer, %a
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%t0 = icmp slt <4 x i32> %sext, zeroinitializer
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%sext3 = sext <4 x i1> %t0 to <4 x i32>
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%t1 = xor <4 x i32> %sext3, <i32 -1, i32 -1, i32 -1, i32 -1>
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%t2 = and <4 x i32> %a, %t1
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%t3 = and <4 x i32> %sext3, %sub
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%cond = or <4 x i32> %t2, %t3
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ret <4 x i32> %cond
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}
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