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dda73336ad22bd0b5ecda17040c50fb10fcbe5fb
clang-p2996/llvm/test/CodeGen/X86/optimize-max-0.ll
Craig Topper 23d45e55ed [MCP] Remove dead copies from basic blocks with successors. (#86973) 
Previously we wouldn't remove dead copies from basic blocks with
successors. The comment said we didn't want to trust the live-in lists.
The comment is very old so I'm not sure if that's still a concern today.

This patch checks the live-in lists and removes copies from
MaybeDeadCopies if they are referenced by any live-ins in any
successors. We only do this if the tracksLiveness property is set. If
that property is not set, we retain the old behavior.
2024-03-28 14:43:49 -07:00

888 lines
32 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s | FileCheck %s
; LSR should be able to eliminate the max computations by
; making the loops use slt/ult comparisons instead of ne comparisons.
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin9"
define void @foo(ptr %r, i32 %s, i32 %w, i32 %x, ptr %j, i32 %d) nounwind {
; CHECK-LABEL: foo:
; CHECK: ## %bb.0: ## %entry
; CHECK-NEXT: pushl %ebp
; CHECK-NEXT: pushl %ebx
; CHECK-NEXT: pushl %edi
; CHECK-NEXT: pushl %esi
; CHECK-NEXT: subl $28, %esp
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edi
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ebp
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
; CHECK-NEXT: movl %edi, %ecx
; CHECK-NEXT: imull %ebp, %ecx
; CHECK-NEXT: cmpl $1, {{[0-9]+}}(%esp)
; CHECK-NEXT: movl %ecx, (%esp) ## 4-byte Spill
; CHECK-NEXT: je LBB0_19
; CHECK-NEXT: ## %bb.1: ## %bb10.preheader
; CHECK-NEXT: movl %ecx, %eax
; CHECK-NEXT: sarl $31, %eax
; CHECK-NEXT: shrl $30, %eax
; CHECK-NEXT: addl %ecx, %eax
; CHECK-NEXT: sarl $2, %eax
; CHECK-NEXT: movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: testl %edi, %edi
; CHECK-NEXT: jle LBB0_12
; CHECK-NEXT: ## %bb.2: ## %bb.nph9
; CHECK-NEXT: testl %ebp, %ebp
; CHECK-NEXT: jle LBB0_12
; CHECK-NEXT: ## %bb.3: ## %bb.nph9.split
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: incl %eax
; CHECK-NEXT: xorl %ecx, %ecx
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
; CHECK-NEXT: xorl %esi, %esi
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: LBB0_4: ## %bb6
; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
; CHECK-NEXT: movzbl (%eax,%esi,2), %ebx
; CHECK-NEXT: movb %bl, (%edx,%esi)
; CHECK-NEXT: incl %esi
; CHECK-NEXT: cmpl %ebp, %esi
; CHECK-NEXT: jl LBB0_4
; CHECK-NEXT: ## %bb.5: ## %bb9
; CHECK-NEXT: ## in Loop: Header=BB0_4 Depth=1
; CHECK-NEXT: incl %ecx
; CHECK-NEXT: addl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: addl %ebp, %edx
; CHECK-NEXT: cmpl %edi, %ecx
; CHECK-NEXT: je LBB0_12
; CHECK-NEXT: ## %bb.6: ## %bb7.preheader
; CHECK-NEXT: ## in Loop: Header=BB0_4 Depth=1
; CHECK-NEXT: xorl %esi, %esi
; CHECK-NEXT: jmp LBB0_4
; CHECK-NEXT: LBB0_12: ## %bb18.loopexit
; CHECK-NEXT: movl (%esp), %eax ## 4-byte Reload
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %ecx ## 4-byte Reload
; CHECK-NEXT: addl %ecx, %eax
; CHECK-NEXT: movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: cmpl $1, %edi
; CHECK-NEXT: jle LBB0_13
; CHECK-NEXT: ## %bb.7: ## %bb.nph5
; CHECK-NEXT: cmpl $2, %ebp
; CHECK-NEXT: jl LBB0_13
; CHECK-NEXT: ## %bb.8: ## %bb.nph5.split
; CHECK-NEXT: movl %ebp, %edx
; CHECK-NEXT: shrl $31, %edx
; CHECK-NEXT: addl %ebp, %edx
; CHECK-NEXT: sarl %edx
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl %eax, %ecx
; CHECK-NEXT: shrl $31, %ecx
; CHECK-NEXT: addl %eax, %ecx
; CHECK-NEXT: sarl %ecx
; CHECK-NEXT: movl %ecx, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %eax ## 4-byte Reload
; CHECK-NEXT: addl %ecx, %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %esi
; CHECK-NEXT: addl $2, %esi
; CHECK-NEXT: movl %esi, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: movl (%esp), %esi ## 4-byte Reload
; CHECK-NEXT: addl %esi, %ecx
; CHECK-NEXT: xorl %esi, %esi
; CHECK-NEXT: xorl %edi, %edi
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: LBB0_9: ## %bb13
; CHECK-NEXT: ## =>This Loop Header: Depth=1
; CHECK-NEXT: ## Child Loop BB0_10 Depth 2
; CHECK-NEXT: movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: andl $1, %edi
; CHECK-NEXT: movl %esi, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: addl %esi, %edi
; CHECK-NEXT: imull {{[0-9]+}}(%esp), %edi
; CHECK-NEXT: addl {{[-0-9]+}}(%e{{[sb]}}p), %edi ## 4-byte Folded Reload
; CHECK-NEXT: xorl %esi, %esi
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: LBB0_10: ## %bb14
; CHECK-NEXT: ## Parent Loop BB0_9 Depth=1
; CHECK-NEXT: ## => This Inner Loop Header: Depth=2
; CHECK-NEXT: movzbl -2(%edi,%esi,4), %ebx
; CHECK-NEXT: movb %bl, (%ecx,%esi)
; CHECK-NEXT: movzbl (%edi,%esi,4), %ebx
; CHECK-NEXT: movb %bl, (%eax,%esi)
; CHECK-NEXT: incl %esi
; CHECK-NEXT: cmpl %edx, %esi
; CHECK-NEXT: jl LBB0_10
; CHECK-NEXT: ## %bb.11: ## %bb17
; CHECK-NEXT: ## in Loop: Header=BB0_9 Depth=1
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %edi ## 4-byte Reload
; CHECK-NEXT: incl %edi
; CHECK-NEXT: addl %edx, %eax
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %esi ## 4-byte Reload
; CHECK-NEXT: addl $2, %esi
; CHECK-NEXT: addl %edx, %ecx
; CHECK-NEXT: cmpl {{[-0-9]+}}(%e{{[sb]}}p), %edi ## 4-byte Folded Reload
; CHECK-NEXT: jl LBB0_9
; CHECK-NEXT: LBB0_13: ## %bb20
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: cmpl $1, %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edi
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
; CHECK-NEXT: je LBB0_19
; CHECK-NEXT: ## %bb.14: ## %bb20
; CHECK-NEXT: cmpl $3, %eax
; CHECK-NEXT: jne LBB0_24
; CHECK-NEXT: ## %bb.15: ## %bb22
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %ebx ## 4-byte Reload
; CHECK-NEXT: addl %ebx, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Folded Spill
; CHECK-NEXT: testl %edi, %edi
; CHECK-NEXT: jle LBB0_18
; CHECK-NEXT: ## %bb.16: ## %bb.nph
; CHECK-NEXT: leal 15(%edi), %eax
; CHECK-NEXT: andl $-16, %eax
; CHECK-NEXT: imull {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: addl %ebx, %ebx
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: movl (%esp), %esi ## 4-byte Reload
; CHECK-NEXT: addl %esi, %ecx
; CHECK-NEXT: addl %ecx, %ebx
; CHECK-NEXT: addl %eax, %edx
; CHECK-NEXT: leal 15(%ebp), %eax
; CHECK-NEXT: andl $-16, %eax
; CHECK-NEXT: movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: LBB0_17: ## %bb23
; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
; CHECK-NEXT: subl $4, %esp
; CHECK-NEXT: pushl %ebp
; CHECK-NEXT: pushl %edx
; CHECK-NEXT: pushl %ebx
; CHECK-NEXT: movl %ebx, %esi
; CHECK-NEXT: movl %edx, %ebx
; CHECK-NEXT: calll _memcpy
; CHECK-NEXT: movl %ebx, %edx
; CHECK-NEXT: movl %esi, %ebx
; CHECK-NEXT: addl $16, %esp
; CHECK-NEXT: addl %ebp, %ebx
; CHECK-NEXT: addl {{[-0-9]+}}(%e{{[sb]}}p), %edx ## 4-byte Folded Reload
; CHECK-NEXT: decl %edi
; CHECK-NEXT: jne LBB0_17
; CHECK-NEXT: LBB0_18: ## %bb26
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %eax ## 4-byte Reload
; CHECK-NEXT: movl (%esp), %edx ## 4-byte Reload
; CHECK-NEXT: addl %edx, %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: addl %eax, %ecx
; CHECK-NEXT: jmp LBB0_23
; CHECK-NEXT: LBB0_19: ## %bb29
; CHECK-NEXT: testl %edi, %edi
; CHECK-NEXT: jle LBB0_22
; CHECK-NEXT: ## %bb.20: ## %bb.nph11
; CHECK-NEXT: movl %edi, %esi
; CHECK-NEXT: leal 15(%ebp), %eax
; CHECK-NEXT: andl $-16, %eax
; CHECK-NEXT: movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edi
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: LBB0_21: ## %bb30
; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
; CHECK-NEXT: subl $4, %esp
; CHECK-NEXT: pushl %ebp
; CHECK-NEXT: pushl %edx
; CHECK-NEXT: pushl %edi
; CHECK-NEXT: movl %edx, %ebx
; CHECK-NEXT: calll _memcpy
; CHECK-NEXT: movl %ebx, %edx
; CHECK-NEXT: addl $16, %esp
; CHECK-NEXT: addl %ebp, %edi
; CHECK-NEXT: addl {{[-0-9]+}}(%e{{[sb]}}p), %edx ## 4-byte Folded Reload
; CHECK-NEXT: decl %esi
; CHECK-NEXT: jne LBB0_21
; CHECK-NEXT: LBB0_22: ## %bb33
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: movl (%esp), %edx ## 4-byte Reload
; CHECK-NEXT: addl %edx, %ecx
; CHECK-NEXT: LBB0_23: ## %bb33
; CHECK-NEXT: movl %edx, %eax
; CHECK-NEXT: shrl $31, %eax
; CHECK-NEXT: addl %edx, %eax
; CHECK-NEXT: sarl %eax
; CHECK-NEXT: subl $4, %esp
; CHECK-NEXT: pushl %eax
; CHECK-NEXT: pushl $128
; CHECK-NEXT: pushl %ecx
; CHECK-NEXT: calll _memset
; CHECK-NEXT: addl $44, %esp
; CHECK-NEXT: LBB0_25: ## %return
; CHECK-NEXT: popl %esi
; CHECK-NEXT: popl %edi
; CHECK-NEXT: popl %ebx
; CHECK-NEXT: popl %ebp
; CHECK-NEXT: retl
; CHECK-NEXT: LBB0_24: ## %return
; CHECK-NEXT: addl $28, %esp
; CHECK-NEXT: jmp LBB0_25
entry:
%0 = mul i32 %x, %w
%1 = mul i32 %x, %w
%2 = sdiv i32 %1, 4
%.sum2 = add i32 %2, %0
%cond = icmp eq i32 %d, 1
br i1 %cond, label %bb29, label %bb10.preheader
bb10.preheader: ; preds = %entry
%3 = icmp sgt i32 %x, 0
br i1 %3, label %bb.nph9, label %bb18.loopexit
bb.nph7: ; preds = %bb7.preheader
%4 = mul i32 %y.08, %w
%5 = mul i32 %y.08, %s
%6 = add i32 %5, 1
%tmp8 = icmp sgt i32 1, %w
%smax9 = select i1 %tmp8, i32 1, i32 %w
br label %bb6
bb6: ; preds = %bb7, %bb.nph7
%x.06 = phi i32 [ 0, %bb.nph7 ], [ %indvar.next7, %bb7 ]
%7 = add i32 %x.06, %4
%8 = shl i32 %x.06, 1
%9 = add i32 %6, %8
%10 = getelementptr i8, ptr %r, i32 %9
%11 = load i8, ptr %10, align 1
%12 = getelementptr i8, ptr %j, i32 %7
store i8 %11, ptr %12, align 1
br label %bb7
bb7: ; preds = %bb6
%indvar.next7 = add i32 %x.06, 1
%exitcond10 = icmp ne i32 %indvar.next7, %smax9
br i1 %exitcond10, label %bb6, label %bb7.bb9_crit_edge
bb7.bb9_crit_edge: ; preds = %bb7
br label %bb9
bb9: ; preds = %bb7.preheader, %bb7.bb9_crit_edge
br label %bb10
bb10: ; preds = %bb9
%indvar.next11 = add i32 %y.08, 1
%exitcond12 = icmp ne i32 %indvar.next11, %x
br i1 %exitcond12, label %bb7.preheader, label %bb10.bb18.loopexit_crit_edge
bb10.bb18.loopexit_crit_edge: ; preds = %bb10
br label %bb10.bb18.loopexit_crit_edge.split
bb10.bb18.loopexit_crit_edge.split: ; preds = %bb.nph9, %bb10.bb18.loopexit_crit_edge
br label %bb18.loopexit
bb.nph9: ; preds = %bb10.preheader
%13 = icmp sgt i32 %w, 0
br i1 %13, label %bb.nph9.split, label %bb10.bb18.loopexit_crit_edge.split
bb.nph9.split: ; preds = %bb.nph9
br label %bb7.preheader
bb7.preheader: ; preds = %bb.nph9.split, %bb10
%y.08 = phi i32 [ 0, %bb.nph9.split ], [ %indvar.next11, %bb10 ]
br i1 true, label %bb.nph7, label %bb9
bb.nph5: ; preds = %bb18.loopexit
%14 = sdiv i32 %w, 2
%15 = icmp slt i32 %w, 2
%16 = sdiv i32 %x, 2
br i1 %15, label %bb18.bb20_crit_edge.split, label %bb.nph5.split
bb.nph5.split: ; preds = %bb.nph5
%tmp2 = icmp sgt i32 1, %16
%smax3 = select i1 %tmp2, i32 1, i32 %16
br label %bb13
bb13: ; preds = %bb18, %bb.nph5.split
%y.14 = phi i32 [ 0, %bb.nph5.split ], [ %indvar.next1, %bb18 ]
%17 = mul i32 %14, %y.14
%18 = shl i32 %y.14, 1
%19 = srem i32 %y.14, 2
%20 = add i32 %19, %18
%21 = mul i32 %20, %s
br i1 true, label %bb.nph3, label %bb17
bb.nph3: ; preds = %bb13
%22 = add i32 %17, %0
%23 = add i32 %17, %.sum2
%24 = sdiv i32 %w, 2
%tmp = icmp sgt i32 1, %24
%smax = select i1 %tmp, i32 1, i32 %24
br label %bb14
bb14: ; preds = %bb15, %bb.nph3
%x.12 = phi i32 [ 0, %bb.nph3 ], [ %indvar.next, %bb15 ]
%25 = shl i32 %x.12, 2
%26 = add i32 %25, %21
%27 = getelementptr i8, ptr %r, i32 %26
%28 = load i8, ptr %27, align 1
%.sum = add i32 %22, %x.12
%29 = getelementptr i8, ptr %j, i32 %.sum
store i8 %28, ptr %29, align 1
%30 = shl i32 %x.12, 2
%31 = or disjoint i32 %30, 2
%32 = add i32 %31, %21
%33 = getelementptr i8, ptr %r, i32 %32
%34 = load i8, ptr %33, align 1
%.sum6 = add i32 %23, %x.12
%35 = getelementptr i8, ptr %j, i32 %.sum6
store i8 %34, ptr %35, align 1
br label %bb15
bb15: ; preds = %bb14
%indvar.next = add i32 %x.12, 1
%exitcond = icmp ne i32 %indvar.next, %smax
br i1 %exitcond, label %bb14, label %bb15.bb17_crit_edge
bb15.bb17_crit_edge: ; preds = %bb15
br label %bb17
bb17: ; preds = %bb15.bb17_crit_edge, %bb13
br label %bb18
bb18.loopexit: ; preds = %bb10.bb18.loopexit_crit_edge.split, %bb10.preheader
%36 = icmp slt i32 %x, 2
br i1 %36, label %bb20, label %bb.nph5
bb18: ; preds = %bb17
%indvar.next1 = add i32 %y.14, 1
%exitcond4 = icmp ne i32 %indvar.next1, %smax3
br i1 %exitcond4, label %bb13, label %bb18.bb20_crit_edge
bb18.bb20_crit_edge: ; preds = %bb18
br label %bb18.bb20_crit_edge.split
bb18.bb20_crit_edge.split: ; preds = %bb18.bb20_crit_edge, %bb.nph5
br label %bb20
bb20: ; preds = %bb18.bb20_crit_edge.split, %bb18.loopexit
switch i32 %d, label %return [
i32 3, label %bb22
i32 1, label %bb29
]
bb22: ; preds = %bb20
%37 = mul i32 %x, %w
%38 = sdiv i32 %37, 4
%.sum3 = add i32 %38, %.sum2
%39 = add i32 %x, 15
%40 = and i32 %39, -16
%41 = add i32 %w, 15
%42 = and i32 %41, -16
%43 = mul i32 %40, %s
%44 = icmp sgt i32 %x, 0
br i1 %44, label %bb.nph, label %bb26
bb.nph: ; preds = %bb22
br label %bb23
bb23: ; preds = %bb24, %bb.nph
%y.21 = phi i32 [ 0, %bb.nph ], [ %indvar.next5, %bb24 ]
%45 = mul i32 %y.21, %42
%.sum1 = add i32 %45, %43
%46 = getelementptr i8, ptr %r, i32 %.sum1
%47 = mul i32 %y.21, %w
%.sum5 = add i32 %47, %.sum3
%48 = getelementptr i8, ptr %j, i32 %.sum5
tail call void @llvm.memcpy.p0.p0.i32(ptr %48, ptr %46, i32 %w, i1 false)
br label %bb24
bb24: ; preds = %bb23
%indvar.next5 = add i32 %y.21, 1
%exitcond6 = icmp ne i32 %indvar.next5, %x
br i1 %exitcond6, label %bb23, label %bb24.bb26_crit_edge
bb24.bb26_crit_edge: ; preds = %bb24
br label %bb26
bb26: ; preds = %bb24.bb26_crit_edge, %bb22
%49 = mul i32 %x, %w
%.sum4 = add i32 %.sum3, %49
%50 = getelementptr i8, ptr %j, i32 %.sum4
%51 = mul i32 %x, %w
%52 = sdiv i32 %51, 2
tail call void @llvm.memset.p0.i32(ptr %50, i8 -128, i32 %52, i1 false)
ret void
bb29: ; preds = %bb20, %entry
%53 = add i32 %w, 15
%54 = and i32 %53, -16
%55 = icmp sgt i32 %x, 0
br i1 %55, label %bb.nph11, label %bb33
bb.nph11: ; preds = %bb29
br label %bb30
bb30: ; preds = %bb31, %bb.nph11
%y.310 = phi i32 [ 0, %bb.nph11 ], [ %indvar.next13, %bb31 ]
%56 = mul i32 %y.310, %54
%57 = getelementptr i8, ptr %r, i32 %56
%58 = mul i32 %y.310, %w
%59 = getelementptr i8, ptr %j, i32 %58
tail call void @llvm.memcpy.p0.p0.i32(ptr %59, ptr %57, i32 %w, i1 false)
br label %bb31
bb31: ; preds = %bb30
%indvar.next13 = add i32 %y.310, 1
%exitcond14 = icmp ne i32 %indvar.next13, %x
br i1 %exitcond14, label %bb30, label %bb31.bb33_crit_edge
bb31.bb33_crit_edge: ; preds = %bb31
br label %bb33
bb33: ; preds = %bb31.bb33_crit_edge, %bb29
%60 = mul i32 %x, %w
%61 = getelementptr i8, ptr %j, i32 %60
%62 = mul i32 %x, %w
%63 = sdiv i32 %62, 2
tail call void @llvm.memset.p0.i32(ptr %61, i8 -128, i32 %63, i1 false)
ret void
return: ; preds = %bb20
ret void
}
define void @bar(ptr %r, i32 %s, i32 %w, i32 %x, ptr %j, i32 %d) nounwind {
; CHECK-LABEL: bar:
; CHECK: ## %bb.0: ## %entry
; CHECK-NEXT: pushl %ebp
; CHECK-NEXT: pushl %ebx
; CHECK-NEXT: pushl %edi
; CHECK-NEXT: pushl %esi
; CHECK-NEXT: subl $28, %esp
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %esi
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ebp
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: movl %ebp, %edx
; CHECK-NEXT: imull %eax, %edx
; CHECK-NEXT: cmpl $1, {{[0-9]+}}(%esp)
; CHECK-NEXT: movl %edx, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: je LBB1_19
; CHECK-NEXT: ## %bb.1: ## %bb10.preheader
; CHECK-NEXT: movl %edx, %ecx
; CHECK-NEXT: shrl $2, %ecx
; CHECK-NEXT: movl %ecx, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: testl %ebp, %ebp
; CHECK-NEXT: movl %eax, %edi
; CHECK-NEXT: je LBB1_12
; CHECK-NEXT: ## %bb.2: ## %bb.nph9
; CHECK-NEXT: testl %eax, %eax
; CHECK-NEXT: je LBB1_12
; CHECK-NEXT: ## %bb.3: ## %bb.nph9.split
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: incl %eax
; CHECK-NEXT: xorl %ecx, %ecx
; CHECK-NEXT: movl %esi, %edx
; CHECK-NEXT: xorl %esi, %esi
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: LBB1_4: ## %bb6
; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
; CHECK-NEXT: movzbl (%eax,%esi,2), %ebx
; CHECK-NEXT: movb %bl, (%edx,%esi)
; CHECK-NEXT: incl %esi
; CHECK-NEXT: cmpl %edi, %esi
; CHECK-NEXT: jb LBB1_4
; CHECK-NEXT: ## %bb.5: ## %bb9
; CHECK-NEXT: ## in Loop: Header=BB1_4 Depth=1
; CHECK-NEXT: incl %ecx
; CHECK-NEXT: addl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: addl %edi, %edx
; CHECK-NEXT: cmpl %ebp, %ecx
; CHECK-NEXT: je LBB1_12
; CHECK-NEXT: ## %bb.6: ## %bb7.preheader
; CHECK-NEXT: ## in Loop: Header=BB1_4 Depth=1
; CHECK-NEXT: xorl %esi, %esi
; CHECK-NEXT: jmp LBB1_4
; CHECK-NEXT: LBB1_12: ## %bb18.loopexit
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %eax ## 4-byte Reload
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %ecx ## 4-byte Reload
; CHECK-NEXT: addl %ecx, %eax
; CHECK-NEXT: movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: cmpl $1, %ebp
; CHECK-NEXT: jbe LBB1_13
; CHECK-NEXT: ## %bb.7: ## %bb.nph5
; CHECK-NEXT: cmpl $2, %edi
; CHECK-NEXT: jb LBB1_13
; CHECK-NEXT: ## %bb.8: ## %bb.nph5.split
; CHECK-NEXT: movl %edi, %ebp
; CHECK-NEXT: shrl %ebp
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: shrl %eax
; CHECK-NEXT: movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %ecx ## 4-byte Reload
; CHECK-NEXT: addl %eax, %ecx
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
; CHECK-NEXT: addl $2, %edx
; CHECK-NEXT: movl %edx, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %edx ## 4-byte Reload
; CHECK-NEXT: addl %edx, %eax
; CHECK-NEXT: xorl %edx, %edx
; CHECK-NEXT: xorl %ebx, %ebx
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: LBB1_9: ## %bb13
; CHECK-NEXT: ## =>This Loop Header: Depth=1
; CHECK-NEXT: ## Child Loop BB1_10 Depth 2
; CHECK-NEXT: movl %ebx, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
; CHECK-NEXT: andl $1, %ebx
; CHECK-NEXT: movl %edx, (%esp) ## 4-byte Spill
; CHECK-NEXT: addl %edx, %ebx
; CHECK-NEXT: imull {{[0-9]+}}(%esp), %ebx
; CHECK-NEXT: addl {{[-0-9]+}}(%e{{[sb]}}p), %ebx ## 4-byte Folded Reload
; CHECK-NEXT: xorl %esi, %esi
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: LBB1_10: ## %bb14
; CHECK-NEXT: ## Parent Loop BB1_9 Depth=1
; CHECK-NEXT: ## => This Inner Loop Header: Depth=2
; CHECK-NEXT: movzbl -2(%ebx,%esi,4), %edx
; CHECK-NEXT: movb %dl, (%eax,%esi)
; CHECK-NEXT: movzbl (%ebx,%esi,4), %edx
; CHECK-NEXT: movb %dl, (%ecx,%esi)
; CHECK-NEXT: incl %esi
; CHECK-NEXT: cmpl %ebp, %esi
; CHECK-NEXT: jb LBB1_10
; CHECK-NEXT: ## %bb.11: ## %bb17
; CHECK-NEXT: ## in Loop: Header=BB1_9 Depth=1
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %ebx ## 4-byte Reload
; CHECK-NEXT: incl %ebx
; CHECK-NEXT: addl %ebp, %ecx
; CHECK-NEXT: movl (%esp), %edx ## 4-byte Reload
; CHECK-NEXT: addl $2, %edx
; CHECK-NEXT: addl %ebp, %eax
; CHECK-NEXT: cmpl {{[-0-9]+}}(%e{{[sb]}}p), %ebx ## 4-byte Folded Reload
; CHECK-NEXT: jb LBB1_9
; CHECK-NEXT: LBB1_13: ## %bb20
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %esi
; CHECK-NEXT: cmpl $1, %esi
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ebp
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: je LBB1_19
; CHECK-NEXT: ## %bb.14: ## %bb20
; CHECK-NEXT: cmpl $3, %esi
; CHECK-NEXT: jne LBB1_24
; CHECK-NEXT: ## %bb.15: ## %bb22
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %edx ## 4-byte Reload
; CHECK-NEXT: addl %edx, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Folded Spill
; CHECK-NEXT: testl %ebp, %ebp
; CHECK-NEXT: je LBB1_18
; CHECK-NEXT: ## %bb.16: ## %bb.nph
; CHECK-NEXT: movl %ebp, %esi
; CHECK-NEXT: leal 15(%ebp), %eax
; CHECK-NEXT: andl $-16, %eax
; CHECK-NEXT: imull {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
; CHECK-NEXT: addl $15, %edx
; CHECK-NEXT: andl $-16, %edx
; CHECK-NEXT: movl %edx, (%esp) ## 4-byte Spill
; CHECK-NEXT: addl %eax, %ecx
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %eax ## 4-byte Reload
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
; CHECK-NEXT: leal (%edx,%eax), %ebp
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: LBB1_17: ## %bb23
; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
; CHECK-NEXT: subl $4, %esp
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ebx
; CHECK-NEXT: pushl %ebx
; CHECK-NEXT: pushl %ecx
; CHECK-NEXT: pushl %ebp
; CHECK-NEXT: movl %ecx, %edi
; CHECK-NEXT: calll _memcpy
; CHECK-NEXT: movl %edi, %ecx
; CHECK-NEXT: addl $16, %esp
; CHECK-NEXT: addl %ebx, %ebp
; CHECK-NEXT: addl (%esp), %ecx ## 4-byte Folded Reload
; CHECK-NEXT: decl %esi
; CHECK-NEXT: jne LBB1_17
; CHECK-NEXT: LBB1_18: ## %bb26
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %eax ## 4-byte Reload
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %ecx ## 4-byte Reload
; CHECK-NEXT: addl %ecx, %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
; CHECK-NEXT: addl %eax, %edx
; CHECK-NEXT: shrl %ecx
; CHECK-NEXT: subl $4, %esp
; CHECK-NEXT: pushl %ecx
; CHECK-NEXT: pushl $128
; CHECK-NEXT: pushl %edx
; CHECK-NEXT: jmp LBB1_23
; CHECK-NEXT: LBB1_19: ## %bb29
; CHECK-NEXT: testl %ebp, %ebp
; CHECK-NEXT: je LBB1_22
; CHECK-NEXT: ## %bb.20: ## %bb.nph11
; CHECK-NEXT: movl %ebp, %esi
; CHECK-NEXT: movl %eax, %edi
; CHECK-NEXT: addl $15, %eax
; CHECK-NEXT: andl $-16, %eax
; CHECK-NEXT: movl %eax, (%esp) ## 4-byte Spill
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ebp
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: LBB1_21: ## %bb30
; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
; CHECK-NEXT: subl $4, %esp
; CHECK-NEXT: pushl %edi
; CHECK-NEXT: pushl %ecx
; CHECK-NEXT: pushl %ebp
; CHECK-NEXT: movl %ecx, %ebx
; CHECK-NEXT: calll _memcpy
; CHECK-NEXT: movl %ebx, %ecx
; CHECK-NEXT: addl $16, %esp
; CHECK-NEXT: addl %edi, %ebp
; CHECK-NEXT: addl (%esp), %ecx ## 4-byte Folded Reload
; CHECK-NEXT: decl %esi
; CHECK-NEXT: jne LBB1_21
; CHECK-NEXT: LBB1_22: ## %bb33
; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %eax ## 4-byte Reload
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: addl %eax, %ecx
; CHECK-NEXT: shrl %eax
; CHECK-NEXT: subl $4, %esp
; CHECK-NEXT: pushl %eax
; CHECK-NEXT: pushl $128
; CHECK-NEXT: pushl %ecx
; CHECK-NEXT: LBB1_23: ## %bb33
; CHECK-NEXT: calll _memset
; CHECK-NEXT: addl $44, %esp
; CHECK-NEXT: LBB1_25: ## %return
; CHECK-NEXT: popl %esi
; CHECK-NEXT: popl %edi
; CHECK-NEXT: popl %ebx
; CHECK-NEXT: popl %ebp
; CHECK-NEXT: retl
; CHECK-NEXT: LBB1_24: ## %return
; CHECK-NEXT: addl $28, %esp
; CHECK-NEXT: jmp LBB1_25
entry:
%0 = mul i32 %x, %w
%1 = mul i32 %x, %w
%2 = udiv i32 %1, 4
%.sum2 = add i32 %2, %0
%cond = icmp eq i32 %d, 1
br i1 %cond, label %bb29, label %bb10.preheader
bb10.preheader: ; preds = %entry
%3 = icmp ne i32 %x, 0
br i1 %3, label %bb.nph9, label %bb18.loopexit
bb.nph7: ; preds = %bb7.preheader
%4 = mul i32 %y.08, %w
%5 = mul i32 %y.08, %s
%6 = add i32 %5, 1
%tmp8 = icmp ugt i32 1, %w
%smax9 = select i1 %tmp8, i32 1, i32 %w
br label %bb6
bb6: ; preds = %bb7, %bb.nph7
%x.06 = phi i32 [ 0, %bb.nph7 ], [ %indvar.next7, %bb7 ]
%7 = add i32 %x.06, %4
%8 = shl i32 %x.06, 1
%9 = add i32 %6, %8
%10 = getelementptr i8, ptr %r, i32 %9
%11 = load i8, ptr %10, align 1
%12 = getelementptr i8, ptr %j, i32 %7
store i8 %11, ptr %12, align 1
br label %bb7
bb7: ; preds = %bb6
%indvar.next7 = add i32 %x.06, 1
%exitcond10 = icmp ne i32 %indvar.next7, %smax9
br i1 %exitcond10, label %bb6, label %bb7.bb9_crit_edge
bb7.bb9_crit_edge: ; preds = %bb7
br label %bb9
bb9: ; preds = %bb7.preheader, %bb7.bb9_crit_edge
br label %bb10
bb10: ; preds = %bb9
%indvar.next11 = add i32 %y.08, 1
%exitcond12 = icmp ne i32 %indvar.next11, %x
br i1 %exitcond12, label %bb7.preheader, label %bb10.bb18.loopexit_crit_edge
bb10.bb18.loopexit_crit_edge: ; preds = %bb10
br label %bb10.bb18.loopexit_crit_edge.split
bb10.bb18.loopexit_crit_edge.split: ; preds = %bb.nph9, %bb10.bb18.loopexit_crit_edge
br label %bb18.loopexit
bb.nph9: ; preds = %bb10.preheader
%13 = icmp ugt i32 %w, 0
br i1 %13, label %bb.nph9.split, label %bb10.bb18.loopexit_crit_edge.split
bb.nph9.split: ; preds = %bb.nph9
br label %bb7.preheader
bb7.preheader: ; preds = %bb.nph9.split, %bb10
%y.08 = phi i32 [ 0, %bb.nph9.split ], [ %indvar.next11, %bb10 ]
br i1 true, label %bb.nph7, label %bb9
bb.nph5: ; preds = %bb18.loopexit
%14 = udiv i32 %w, 2
%15 = icmp ult i32 %w, 2
%16 = udiv i32 %x, 2
br i1 %15, label %bb18.bb20_crit_edge.split, label %bb.nph5.split
bb.nph5.split: ; preds = %bb.nph5
%tmp2 = icmp ugt i32 1, %16
%smax3 = select i1 %tmp2, i32 1, i32 %16
br label %bb13
bb13: ; preds = %bb18, %bb.nph5.split
%y.14 = phi i32 [ 0, %bb.nph5.split ], [ %indvar.next1, %bb18 ]
%17 = mul i32 %14, %y.14
%18 = shl i32 %y.14, 1
%19 = urem i32 %y.14, 2
%20 = add i32 %19, %18
%21 = mul i32 %20, %s
br i1 true, label %bb.nph3, label %bb17
bb.nph3: ; preds = %bb13
%22 = add i32 %17, %0
%23 = add i32 %17, %.sum2
%24 = udiv i32 %w, 2
%tmp = icmp ugt i32 1, %24
%smax = select i1 %tmp, i32 1, i32 %24
br label %bb14
bb14: ; preds = %bb15, %bb.nph3
%x.12 = phi i32 [ 0, %bb.nph3 ], [ %indvar.next, %bb15 ]
%25 = shl i32 %x.12, 2
%26 = add i32 %25, %21
%27 = getelementptr i8, ptr %r, i32 %26
%28 = load i8, ptr %27, align 1
%.sum = add i32 %22, %x.12
%29 = getelementptr i8, ptr %j, i32 %.sum
store i8 %28, ptr %29, align 1
%30 = shl i32 %x.12, 2
%31 = or disjoint i32 %30, 2
%32 = add i32 %31, %21
%33 = getelementptr i8, ptr %r, i32 %32
%34 = load i8, ptr %33, align 1
%.sum6 = add i32 %23, %x.12
%35 = getelementptr i8, ptr %j, i32 %.sum6
store i8 %34, ptr %35, align 1
br label %bb15
bb15: ; preds = %bb14
%indvar.next = add i32 %x.12, 1
%exitcond = icmp ne i32 %indvar.next, %smax
br i1 %exitcond, label %bb14, label %bb15.bb17_crit_edge
bb15.bb17_crit_edge: ; preds = %bb15
br label %bb17
bb17: ; preds = %bb15.bb17_crit_edge, %bb13
br label %bb18
bb18.loopexit: ; preds = %bb10.bb18.loopexit_crit_edge.split, %bb10.preheader
%36 = icmp ult i32 %x, 2
br i1 %36, label %bb20, label %bb.nph5
bb18: ; preds = %bb17
%indvar.next1 = add i32 %y.14, 1
%exitcond4 = icmp ne i32 %indvar.next1, %smax3
br i1 %exitcond4, label %bb13, label %bb18.bb20_crit_edge
bb18.bb20_crit_edge: ; preds = %bb18
br label %bb18.bb20_crit_edge.split
bb18.bb20_crit_edge.split: ; preds = %bb18.bb20_crit_edge, %bb.nph5
br label %bb20
bb20: ; preds = %bb18.bb20_crit_edge.split, %bb18.loopexit
switch i32 %d, label %return [
i32 3, label %bb22
i32 1, label %bb29
]
bb22: ; preds = %bb20
%37 = mul i32 %x, %w
%38 = udiv i32 %37, 4
%.sum3 = add i32 %38, %.sum2
%39 = add i32 %x, 15
%40 = and i32 %39, -16
%41 = add i32 %w, 15
%42 = and i32 %41, -16
%43 = mul i32 %40, %s
%44 = icmp ugt i32 %x, 0
br i1 %44, label %bb.nph, label %bb26
bb.nph: ; preds = %bb22
br label %bb23
bb23: ; preds = %bb24, %bb.nph
%y.21 = phi i32 [ 0, %bb.nph ], [ %indvar.next5, %bb24 ]
%45 = mul i32 %y.21, %42
%.sum1 = add i32 %45, %43
%46 = getelementptr i8, ptr %r, i32 %.sum1
%47 = mul i32 %y.21, %w
%.sum5 = add i32 %47, %.sum3
%48 = getelementptr i8, ptr %j, i32 %.sum5
tail call void @llvm.memcpy.p0.p0.i32(ptr %48, ptr %46, i32 %w, i1 false)
br label %bb24
bb24: ; preds = %bb23
%indvar.next5 = add i32 %y.21, 1
%exitcond6 = icmp ne i32 %indvar.next5, %x
br i1 %exitcond6, label %bb23, label %bb24.bb26_crit_edge
bb24.bb26_crit_edge: ; preds = %bb24
br label %bb26
bb26: ; preds = %bb24.bb26_crit_edge, %bb22
%49 = mul i32 %x, %w
%.sum4 = add i32 %.sum3, %49
%50 = getelementptr i8, ptr %j, i32 %.sum4
%51 = mul i32 %x, %w
%52 = udiv i32 %51, 2
tail call void @llvm.memset.p0.i32(ptr %50, i8 -128, i32 %52, i1 false)
ret void
bb29: ; preds = %bb20, %entry
%53 = add i32 %w, 15
%54 = and i32 %53, -16
%55 = icmp ugt i32 %x, 0
br i1 %55, label %bb.nph11, label %bb33
bb.nph11: ; preds = %bb29
br label %bb30
bb30: ; preds = %bb31, %bb.nph11
%y.310 = phi i32 [ 0, %bb.nph11 ], [ %indvar.next13, %bb31 ]
%56 = mul i32 %y.310, %54
%57 = getelementptr i8, ptr %r, i32 %56
%58 = mul i32 %y.310, %w
%59 = getelementptr i8, ptr %j, i32 %58
tail call void @llvm.memcpy.p0.p0.i32(ptr %59, ptr %57, i32 %w, i1 false)
br label %bb31
bb31: ; preds = %bb30
%indvar.next13 = add i32 %y.310, 1
%exitcond14 = icmp ne i32 %indvar.next13, %x
br i1 %exitcond14, label %bb30, label %bb31.bb33_crit_edge
bb31.bb33_crit_edge: ; preds = %bb31
br label %bb33
bb33: ; preds = %bb31.bb33_crit_edge, %bb29
%60 = mul i32 %x, %w
%61 = getelementptr i8, ptr %j, i32 %60
%62 = mul i32 %x, %w
%63 = udiv i32 %62, 2
tail call void @llvm.memset.p0.i32(ptr %61, i8 -128, i32 %63, i1 false)
ret void
return: ; preds = %bb20
ret void
}
declare void @llvm.memcpy.p0.p0.i32(ptr nocapture, ptr nocapture, i32, i1) nounwind
declare void @llvm.memset.p0.i32(ptr nocapture, i8, i32, i1) nounwind
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