derek.holloway
7502bf64a4
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67 lines
2.4 KiB
LLVM
67 lines
2.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
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define i16 @test1(i16 %a) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[C:%.*]] = lshr i16 [[A:%.*]], 8
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; CHECK-NEXT: [[D:%.*]] = mul i16 [[A]], 5
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; CHECK-NEXT: [[E:%.*]] = or i16 [[C]], [[D]]
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; CHECK-NEXT: ret i16 [[E]]
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;
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%b = zext i16 %a to i32 ; <i32> [#uses=2]
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%c = lshr i32 %b, 8 ; <i32> [#uses=1]
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%d = mul i32 %b, 5 ; <i32> [#uses=1]
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%e = or i32 %c, %d ; <i32> [#uses=1]
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%f = trunc i32 %e to i16 ; <i16> [#uses=1]
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ret i16 %f
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}
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define <2 x i16> @test1_vec(<2 x i16> %a) {
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; CHECK-LABEL: @test1_vec(
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; CHECK-NEXT: [[C:%.*]] = lshr <2 x i16> [[A:%.*]], splat (i16 8)
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; CHECK-NEXT: [[D:%.*]] = mul <2 x i16> [[A]], splat (i16 5)
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; CHECK-NEXT: [[E:%.*]] = or <2 x i16> [[C]], [[D]]
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; CHECK-NEXT: ret <2 x i16> [[E]]
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;
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%b = zext <2 x i16> %a to <2 x i32>
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%c = lshr <2 x i32> %b, <i32 8, i32 8>
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%d = mul <2 x i32> %b, <i32 5, i32 5>
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%e = or <2 x i32> %c, %d
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%f = trunc <2 x i32> %e to <2 x i16>
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ret <2 x i16> %f
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}
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define <2 x i16> @test1_vec_nonuniform(<2 x i16> %a) {
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; CHECK-LABEL: @test1_vec_nonuniform(
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; CHECK-NEXT: [[C:%.*]] = lshr <2 x i16> [[A:%.*]], <i16 8, i16 9>
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; CHECK-NEXT: [[D:%.*]] = mul <2 x i16> [[A]], <i16 5, i16 6>
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; CHECK-NEXT: [[E:%.*]] = or <2 x i16> [[C]], [[D]]
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; CHECK-NEXT: ret <2 x i16> [[E]]
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;
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%b = zext <2 x i16> %a to <2 x i32>
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%c = lshr <2 x i32> %b, <i32 8, i32 9>
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%d = mul <2 x i32> %b, <i32 5, i32 6>
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%e = or <2 x i32> %c, %d
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%f = trunc <2 x i32> %e to <2 x i16>
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ret <2 x i16> %f
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}
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define <2 x i16> @test1_vec_undef(<2 x i16> %a) {
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; CHECK-LABEL: @test1_vec_undef(
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; CHECK-NEXT: [[B:%.*]] = zext <2 x i16> [[A:%.*]] to <2 x i32>
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; CHECK-NEXT: [[C:%.*]] = lshr <2 x i32> [[B]], <i32 8, i32 undef>
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; CHECK-NEXT: [[D:%.*]] = mul <2 x i32> [[B]], <i32 5, i32 undef>
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; CHECK-NEXT: [[E:%.*]] = or <2 x i32> [[C]], [[D]]
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; CHECK-NEXT: [[F:%.*]] = trunc <2 x i32> [[E]] to <2 x i16>
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; CHECK-NEXT: ret <2 x i16> [[F]]
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;
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%b = zext <2 x i16> %a to <2 x i32>
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%c = lshr <2 x i32> %b, <i32 8, i32 undef>
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%d = mul <2 x i32> %b, <i32 5, i32 undef>
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%e = or <2 x i32> %c, %d
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%f = trunc <2 x i32> %e to <2 x i16>
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ret <2 x i16> %f
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}
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