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