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|
;=========================== begin_copyright_notice ============================
;
; Copyright (C) 2021 Intel Corporation
;
; SPDX-License-Identifier: MIT
;
;============================ end_copyright_notice =============================
; RUN: igc_opt -igc-phielimination -S %s -o %t.ll
; RUN: FileCheck %s --input-file=%t.ll
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-v16:16:16-v24:32:32-v32:32:32-v48:64:64-v64:64:64-v96:128:128-v128:128:128-v192:256:256-v256:256:256-v512:512:512-v1024:1024:1024-n8:16:32"
target triple = "spir64-unknown-unknown"
; Function Attrs: nounwind readnone speculatable willreturn
declare void @llvm.dbg.value(metadata, metadata, metadata)
; Function Attrs: alwaysinline convergent nounwind
define spir_kernel void @igcphieliminationtest0(float addrspace(3)* %arg) {
; 2 duplicate phi node loops made of ai and xi
entry:
%index = getelementptr inbounds float, float addrspace(3)* %arg, i64 0
br i1 1, label %outer.loop.preheader, label %outer.loop.cleanup
outer.loop.preheader: ; preds = %entry
br label %outer.loop
outer.loop: ; preds = %outer.loop.preheader, %if.end2
%i = phi i32 [ 0, %outer.loop.preheader ], [ %ii, %if.end2 ]
%a0 = phi float [ 0.0, %outer.loop.preheader ], [ %a4, %if.end2 ]
%x0 = phi float [ 0.0, %outer.loop.preheader ], [ %x4, %if.end2 ]
br i1 0, label %if.then0, label %if.end2
if.then0: ; preds = %outer.loop
br i1 1, label %inner.loop.preheader, label %inner.loop.cleanup
inner.loop.preheader: ; preds = %if.then0
br label %inner.loop
inner.loop: ; preds = %inner.loop.preheader, %if.end1
%j = phi i32 [ 0, %inner.loop.preheader ], [ %jj, %if.end1 ]
%a2 = phi float [ %a0, %inner.loop.preheader ], [ %a3, %if.end1 ]
%x2 = phi float [ %x0, %inner.loop.preheader ], [ %x3, %if.end1 ]
br label %if.end0
if.end0: ; preds = %inner.loop
br i1 0, label %if.then1, label %if.end1
if.then1: ; preds = %if.end0
br i1 1, label %if.then2, label %if.end1
if.then2: ; preds = %if.then1
%t = fadd float %a2, 1.0
br label %if.end1
if.end1: ; preds = %if.then1, %if.end0, %if.then2
%a3 = phi float [ %t, %if.then2 ], [ %a2, %if.end0 ], [ %a2, %if.then1 ]
%x3 = phi float [ %t, %if.then2 ], [ %x2, %if.end0 ], [ %x2, %if.then1 ]
%jj = add nuw nsw i32 %j, 1
%inner.cmp = icmp slt i32 %jj, 16
br i1 %inner.cmp, label %inner.loop, label %inner.loop.cleanup
inner.loop.cleanup: ; preds = %if.end1, %if.then0
%a1 = phi float [ %a0, %if.then0 ], [ %a3, %if.end1 ]
%x1 = phi float [ %x0, %if.then0 ], [ %x3, %if.end1 ]
br label %if.end2
if.end2: ; preds = %outer.loop, %inner.loop.cleanup
%a4 = phi float [ %a1, %inner.loop.cleanup ], [ %a0, %outer.loop ]
%x4 = phi float [ %x1, %inner.loop.cleanup ], [ %x0, %outer.loop ]
%ii = add nuw nsw i32 %i, 1
%outer.cmp = icmp slt i32 %ii, 16
br i1 %outer.cmp, label %outer.loop, label %outer.loop.cleanup
outer.loop.cleanup: ; preds = %if.end2, %entry
%x5 = phi float [ 0.0, %entry ], [ %x4, %if.end2 ]
store float %x5, float addrspace(3)* %index, align 4
br label %exit
exit: ; preds = %outer.loop.cleanup
ret void
}
!1 = !{}
; CHECK-NOT: %a0
; CHECK: %x0 = phi float
; CHECK-NOT: %a2
; CHECK: %x2 = phi float
; CHECK: %t = fadd float %x2
; CHECK-NOT: %a3
; CHECK: %x3 = phi float
; CHECK-NOT: %a1
; CHECK: %x1 = phi float
; CHECK-NOT: %a4
; CHECK: %x4 = phi float
; CHECK: %x5 = phi float
; Function Attrs: alwaysinline convergent nounwind
define spir_kernel void @igcphieliminationtest1(float addrspace(3)* %arg) {
; 4 duplicate phi node loops made of ai, bi, xi, and yi
entry:
%index = getelementptr inbounds float, float addrspace(3)* %arg, i64 0
%s = load float, float addrspace(3)* %index, align 4
br i1 1, label %outer.loop.preheader, label %outer.loop.cleanup
outer.loop.preheader: ; preds = %entry
br label %outer.loop
outer.loop: ; preds = %outer.loop.preheader, %if.end2
%i = phi i32 [ 0, %outer.loop.preheader ], [ %ii, %if.end2 ]
%a0 = phi float [ %s, %outer.loop.preheader ], [ %a4, %if.end2 ]
%b0 = phi float [ %s, %outer.loop.preheader ], [ %b4, %if.end2 ]
%x0 = phi float [ %s, %outer.loop.preheader ], [ %x4, %if.end2 ]
%y0 = phi float [ %s, %outer.loop.preheader ], [ %y4, %if.end2 ]
br i1 0, label %if.then0, label %if.end2
if.then0: ; preds = %outer.loop
br i1 1, label %inner.loop.preheader, label %inner.loop.cleanup
inner.loop.preheader: ; preds = %if.then0
br label %inner.loop
inner.loop: ; preds = %inner.loop.preheader, %if.end1
%j = phi i32 [ 0, %inner.loop.preheader ], [ %jj, %if.end1 ]
%a2 = phi float [ %a0, %inner.loop.preheader ], [ %a3, %if.end1 ]
%b2 = phi float [ %b0, %inner.loop.preheader ], [ %b3, %if.end1 ]
%x2 = phi float [ %x0, %inner.loop.preheader ], [ %x3, %if.end1 ]
%y2 = phi float [ %y0, %inner.loop.preheader ], [ %y3, %if.end1 ]
br label %if.end0
if.end0: ; preds = %inner.loop
br i1 0, label %if.then1, label %if.end1
if.then1: ; preds = %if.end0
br i1 1, label %if.then2, label %if.end1
if.then2: ; preds = %if.then1
%t = fadd float %a2, 1.0
br label %if.end1
if.end1: ; preds = %if.then1, %if.end0, %if.then2
%a3 = phi float [ %t, %if.then2 ], [ %a2, %if.end0 ], [ %a2, %if.then1 ]
%b3 = phi float [ %t, %if.then2 ], [ %b2, %if.end0 ], [ %b2, %if.then1 ]
%x3 = phi float [ %t, %if.then2 ], [ %x2, %if.end0 ], [ %x2, %if.then1 ]
%y3 = phi float [ %t, %if.then2 ], [ %y2, %if.end0 ], [ %y2, %if.then1 ]
%jj = add nuw nsw i32 %j, 1
%inner.cmp = icmp slt i32 %jj, 16
br i1 %inner.cmp, label %inner.loop, label %inner.loop.cleanup
inner.loop.cleanup: ; preds = %if.end1, %if.then0
%a1 = phi float [ %a0, %if.then0 ], [ %a3, %if.end1 ]
%b1 = phi float [ %b0, %if.then0 ], [ %b3, %if.end1 ]
%x1 = phi float [ %x0, %if.then0 ], [ %x3, %if.end1 ]
%y1 = phi float [ %y0, %if.then0 ], [ %y3, %if.end1 ]
br label %if.end2
if.end2: ; preds = %outer.loop, %inner.loop.cleanup
%a4 = phi float [ %a1, %inner.loop.cleanup ], [ %a0, %outer.loop ]
%b4 = phi float [ %b1, %inner.loop.cleanup ], [ %b0, %outer.loop ]
%x4 = phi float [ %x1, %inner.loop.cleanup ], [ %x0, %outer.loop ]
%y4 = phi float [ %y1, %inner.loop.cleanup ], [ %y0, %outer.loop ]
%ii = add nuw nsw i32 %i, 1
%outer.cmp = icmp slt i32 %ii, 16
br i1 %outer.cmp, label %outer.loop, label %outer.loop.cleanup
outer.loop.cleanup: ; preds = %if.end2, %entry
%x5 = phi float [ %s, %entry ], [ %x4, %if.end2 ]
%y5 = phi float [ %s, %entry ], [ %y4, %if.end2 ]
store float %x5, float addrspace(3)* %index, align 4
br label %exit
exit: ; preds = %outer.loop.cleanup
ret void
}
; CHECK-NOT: %a0
; CHECK-NOT: %b0
; CHECK: %x0 = phi float
; CHECK-NOT: %y0
; CHECK-NOT: %a2
; CHECK-NOT: %b2
; CHECK: %x2 = phi float
; CHECK-NOT: %y3
; CHECK: %t = fadd float %x2
; CHECK-NOT: %a3
; CHECK-NOT: %b3
; CHECK: %x3 = phi float
; CHECK-NOT: %y3
; CHECK-NOT: %a1
; CHECK-NOT: %b1
; CHECK: %x1 = phi float
; CHECK-NOT: %y1
; CHECK-NOT: %a4
; CHECK-NOT: %b4
; CHECK: %x4 = phi float
; CHECK-NOT: %y4
; CHECK: %x5 = phi float
; CHECK-NOT: %y5
; Function Attrs: alwaysinline convergent nounwind
define spir_kernel void @igcphieliminationtest2(float addrspace(3)* %arg) {
; 2 duplicate phi node loops made of ai and xi (outer1-inner1), bi and yi (outer0-inner0)
entry:
%index = getelementptr inbounds float, float addrspace(3)* %arg, i64 0
br i1 1, label %outer1.loop.preheader, label %outer1.loop.cleanup
outer1.loop.preheader: ; preds = %entry
br label %outer1.loop
outer1.loop: ; preds = %outer1.loop.preheader, %if1.end2
%i = phi i32 [ 0, %outer1.loop.preheader ], [ %ii, %if1.end2 ]
%a0 = phi float [ 0.0, %outer1.loop.preheader ], [ %a4, %if1.end2 ]
%x0 = phi float [ 0.0, %outer1.loop.preheader ], [ %x4, %if1.end2 ]
br i1 0, label %if1.then0, label %if1.end2
if1.then0: ; preds = %outer1.loop
br i1 1, label %inner1.loop.preheader, label %inner1.loop.cleanup
inner1.loop.preheader: ; preds = %if1.then0
br label %inner1.loop
inner1.loop: ; preds = %inner1.loop.preheader, %if1.end1
%j = phi i32 [ 0, %inner1.loop.preheader ], [ %jj, %if1.end1 ]
%a2 = phi float [ %a0, %inner1.loop.preheader ], [ %a3, %if1.end1 ]
%x2 = phi float [ %x0, %inner1.loop.preheader ], [ %x3, %if1.end1 ]
br i1 1, label %outer0.loop.preheader, label %outer0.loop.cleanup
outer0.loop.preheader: ; preds = %entry
br label %outer0.loop
outer0.loop: ; preds = %outer0.loop.preheader, %if0.end2
%k = phi i32 [ 0, %outer0.loop.preheader ], [ %kk, %if0.end2 ]
%b0 = phi float [ 0.0, %outer0.loop.preheader ], [ %b4, %if0.end2 ]
%y0 = phi float [ 0.0, %outer0.loop.preheader ], [ %y4, %if0.end2 ]
br i1 0, label %if0.then0, label %if0.end2
if0.then0: ; preds = %outer0.loop
br i1 1, label %inner0.loop.preheader, label %inner0.loop.cleanup
inner0.loop.preheader: ; preds = %if0.then0
br label %inner0.loop
inner0.loop: ; preds = %inner0.loop.preheader, %if0.end1
%l = phi i32 [ 0, %inner0.loop.preheader ], [ %ll, %if0.end1 ]
%b2 = phi float [ %b0, %inner0.loop.preheader ], [ %b3, %if0.end1 ]
%y2 = phi float [ %y0, %inner0.loop.preheader ], [ %y3, %if0.end1 ]
br label %if0.end0
if0.end0: ; preds = %inner0.loop
br i1 0, label %if0.then1, label %if0.end1
if0.then1: ; preds = %if0.end0
br i1 1, label %if0.then2, label %if0.end1
if0.then2: ; preds = %if0.then1
%t = fadd float %b2, 1.0
br label %if0.end1
if0.end1: ; preds = %if0.then1, %if0.end0, %if0.then2
%b3 = phi float [ %t, %if0.then2 ], [ %b2, %if0.end0 ], [ %b2, %if0.then1 ]
%y3 = phi float [ %t, %if0.then2 ], [ %y2, %if0.end0 ], [ %y2, %if0.then1 ]
%ll = add nuw nsw i32 %l, 1
%inner0.cmp = icmp slt i32 %ll, 16
br i1 %inner0.cmp, label %inner0.loop, label %inner0.loop.cleanup
inner0.loop.cleanup: ; preds = %if0.end1, %if0.then0
%b1 = phi float [ %b0, %if0.then0 ], [ %b3, %if0.end1 ]
%y1 = phi float [ %y0, %if0.then0 ], [ %y3, %if0.end1 ]
br label %if0.end2
if0.end2: ; preds = %outer0.loop, %inner0.loop.cleanup
%b4 = phi float [ %b1, %inner0.loop.cleanup ], [ %b0, %outer0.loop ]
%y4 = phi float [ %y1, %inner0.loop.cleanup ], [ %y0, %outer0.loop ]
%kk = add nuw nsw i32 %k, 1
%outer0.cmp = icmp slt i32 %kk, 16
br i1 %outer0.cmp, label %outer0.loop, label %outer0.loop.cleanup
outer0.loop.cleanup: ; preds = %if0.end2, %entry
%y5 = phi float [ %x0, %inner1.loop], [ %y4, %if0.end2 ]
br label %if1.end0
if1.end0: ; preds = %inner1.loop
br i1 0, label %if1.then1, label %if1.end1
if1.then1: ; preds = %if1.end0
br i1 1, label %if1.then2, label %if1.end1
if1.then2: ; preds = %if1.then1
%tt = fadd float %a2, %y5
br label %if1.end1
if1.end1: ; preds = %if1.then1, %if1.end0, %if1.then2
%a3 = phi float [ %tt, %if1.then2 ], [ %a2, %if1.end0 ], [ %a2, %if1.then1 ]
%x3 = phi float [ %tt, %if1.then2 ], [ %x2, %if1.end0 ], [ %x2, %if1.then1 ]
%jj = add nuw nsw i32 %j, 1
%inner1.cmp = icmp slt i32 %jj, 16
br i1 %inner1.cmp, label %inner1.loop, label %inner1.loop.cleanup
inner1.loop.cleanup: ; preds = %if1.end1, %if1.then0
%a1 = phi float [ %a0, %if1.then0 ], [ %a3, %if1.end1 ]
%x1 = phi float [ %x0, %if1.then0 ], [ %x3, %if1.end1 ]
br label %if1.end2
if1.end2: ; preds = %outer1.loop, %inner1.loop.cleanup
%a4 = phi float [ %a1, %inner1.loop.cleanup ], [ %a0, %outer1.loop ]
%x4 = phi float [ %x1, %inner1.loop.cleanup ], [ %x0, %outer1.loop ]
%ii = add nuw nsw i32 %i, 1
%outer1.cmp = icmp slt i32 %ii, 16
br i1 %outer1.cmp, label %outer1.loop, label %outer1.loop.cleanup
outer1.loop.cleanup: ; preds = %if1.end2, %entry
%x5 = phi float [ 0.0, %entry ], [ %x4, %if1.end2 ]
store float %x5, float addrspace(3)* %index, align 4
br label %exit
exit: ; preds = %outer1.loop.cleanup
ret void
}
; Outer
; CHECK-NOT: %a0
; CHECK: %x0 = phi float
; CHECK-NOT: %a2
; CHECK: %x2 = phi float
; Inner
; CHECK-NOT: %b0
; CHECK: %y0 = phi float
; CHECK-NOT: %b2
; CHECK: %y2 = phi float
; CHECK: %t = fadd float %y2
; CHECK-NOT: %b3
; CHECK: %y3 = phi float
; CHECK-NOT: %b1
; CHECK: %y1 = phi float
; CHECK-NOT: %b4
; CHECK: %y4 = phi float
; CHECK: %y5 = phi float
; Outer
; CHECK: %tt = fadd float %x2, %y5
; CHECK-NOT: %a3
; CHECK: %x3 = phi float
; CHECK-NOT: %a1
; CHECK: %x1 = phi float
; CHECK-NOT: %a4
; CHECK: %x4 = phi float
; CHECK: %x5 = phi float
; Function Attrs: alwaysinline convergent nounwind
define spir_kernel void @igcphieliminationtest3(float addrspace(3)* %arg) {
; 2 duplicate phi node loops made of ai and xi within one basic block
entry:
%index = getelementptr inbounds float, float addrspace(3)* %arg, i64 0
br label %outer.loop
outer.loop: ; preds = %outer.loop.preheader, %if.end2
%i = phi i32 [ 0, %entry ], [ %ii, %outer.loop ]
%a0 = phi float [ 0.0, %entry ], [ %tt, %outer.loop ]
%x0 = phi float [ 0.0, %entry ], [ %tt, %outer.loop ]
%tt = fadd float %a0, 1.0
%ii = add nuw nsw i32 %i, 1
%outer.cmp = icmp slt i32 %ii, 16
br i1 %outer.cmp, label %outer.loop, label %outer.loop.cleanup
outer.loop.cleanup: ; preds = %if.end2, %entry
store float %x0, float addrspace(3)* %index, align 4
br label %exit
exit: ; preds = %outer.loop.cleanup
ret void
}
; CHECK-NOT: %a0
; CHECK: %x0 = phi float
; CHECK: %tt = fadd float %x0
|
