derek.holloway
7502bf64a4
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109 lines
3.4 KiB
LLVM
109 lines
3.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
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; RUN: llc < %s -verify-machineinstrs -mattr=+simd128 | FileCheck %s
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; Test that SIMD shifts can be lowered correctly even when shift
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; values are exported from outside blocks.
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target triple = "wasm32-unknown-unknown"
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define void @shl_loop(ptr %a, i8 %shift, i32 %count) {
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; CHECK-LABEL: shl_loop:
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; CHECK: .functype shl_loop (i32, i32, i32) -> ()
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; CHECK-NEXT: .local i32
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; CHECK-NEXT: # %bb.0: # %entry
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; CHECK-NEXT: .LBB0_1: # %body
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; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: loop # label0:
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: i32.const 16
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; CHECK-NEXT: i32.add
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; CHECK-NEXT: local.tee 3
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: v128.load 0:p2align=0
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i8x16.shl
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; CHECK-NEXT: v128.store 0
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; CHECK-NEXT: local.get 3
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; CHECK-NEXT: local.set 0
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i32.const -1
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; CHECK-NEXT: i32.add
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; CHECK-NEXT: local.tee 2
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; CHECK-NEXT: i32.eqz
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; CHECK-NEXT: br_if 0 # 0: up to label0
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; CHECK-NEXT: # %bb.2: # %exit
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; CHECK-NEXT: end_loop
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; CHECK-NEXT: # fallthrough-return
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entry:
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%t1 = insertelement <16 x i8> undef, i8 %shift, i32 0
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%vshift = shufflevector <16 x i8> %t1, <16 x i8> undef, <16 x i32> zeroinitializer
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br label %body
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body:
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%out = phi ptr [%a, %entry], [%b, %body]
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%i = phi i32 [0, %entry], [%next, %body]
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%v = load <16 x i8>, ptr %out, align 1
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%r = shl <16 x i8> %v, %vshift
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%b = getelementptr inbounds i8, ptr %out, i32 16
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store <16 x i8> %r, ptr %b
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%next = add i32 %i, 1
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%i.cmp = icmp eq i32 %next, %count
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br i1 %i.cmp, label %body, label %exit
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exit:
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ret void
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}
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; Test that SIMD shifts can be lowered correctly when shift value
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; is a phi inside loop body.
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define void @shl_phi_loop(ptr %a, i8 %shift, i32 %count) {
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; CHECK-LABEL: shl_phi_loop:
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; CHECK: .functype shl_phi_loop (i32, i32, i32) -> ()
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; CHECK-NEXT: .local i32
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; CHECK-NEXT: # %bb.0: # %entry
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; CHECK-NEXT: .LBB1_1: # %body
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; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: loop # label1:
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: i32.const 16
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; CHECK-NEXT: i32.add
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; CHECK-NEXT: local.tee 3
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: v128.load 0:p2align=0
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i8x16.shl
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; CHECK-NEXT: v128.store 0
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i32.const 1
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; CHECK-NEXT: i32.and
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; CHECK-NEXT: local.set 1
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; CHECK-NEXT: local.get 3
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; CHECK-NEXT: local.set 0
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i32.const -1
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; CHECK-NEXT: i32.add
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; CHECK-NEXT: local.tee 2
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; CHECK-NEXT: i32.eqz
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; CHECK-NEXT: br_if 0 # 0: up to label1
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; CHECK-NEXT: # %bb.2: # %exit
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; CHECK-NEXT: end_loop
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; CHECK-NEXT: # fallthrough-return
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entry:
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br label %body
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body:
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%out = phi ptr [%a, %entry], [%b, %body]
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%i = phi i32 [0, %entry], [%next, %body]
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%t1 = phi i8 [%shift, %entry], [%sand, %body]
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%t2 = insertelement <16 x i8> undef, i8 %t1, i32 0
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%vshift = shufflevector <16 x i8> %t2, <16 x i8> undef, <16 x i32> zeroinitializer
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%v = load <16 x i8>, ptr %out, align 1
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%r = shl <16 x i8> %v, %vshift
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%b = getelementptr inbounds i8, ptr %out, i32 16
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store <16 x i8> %r, ptr %b
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%sand = and i8 %t1, 1
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%next = add i32 %i, 1
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%i.cmp = icmp eq i32 %next, %count
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br i1 %i.cmp, label %body, label %exit
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exit:
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ret void
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}
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