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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=i686-unknown -verify-machineinstrs < %s | FileCheck %s
; RUN: opt < %s -codegenprepare -S -mtriple=x86_64-unknown-unknown | FileCheck --check-prefix=CHECK-CGP %s
@A = global i32 zeroinitializer
@B = global i32 zeroinitializer
@C = global i32 zeroinitializer
; Test that 'and' is sunk into bb0.
define i32 @and_sink1(i32 %a, i1 %c) {
; CHECK-LABEL: and_sink1:
; CHECK: # %bb.0:
; CHECK-NEXT: testb $1, {{[0-9]+}}(%esp)
; CHECK-NEXT: je .LBB0_3
; CHECK-NEXT: # %bb.1: # %bb0
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl $0, A
; CHECK-NEXT: testb $4, %al
; CHECK-NEXT: jne .LBB0_3
; CHECK-NEXT: # %bb.2: # %bb1
; CHECK-NEXT: movl $1, %eax
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB0_3: # %bb2
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: retl
; CHECK-CGP-LABEL: @and_sink1(
; CHECK-CGP-NOT: and i32
%and = and i32 %a, 4
br i1 %c, label %bb0, label %bb2
bb0:
; CHECK-CGP-LABEL: bb0:
; CHECK-CGP: and i32
; CHECK-CGP-NEXT: icmp eq i32
; CHECK-CGP-NEXT: store
; CHECK-CGP-NEXT: br
%cmp = icmp eq i32 %and, 0
store i32 0, i32* @A
br i1 %cmp, label %bb1, label %bb2
bb1:
ret i32 1
bb2:
ret i32 0
}
; Test that both 'and' and cmp get sunk to bb1.
define i32 @and_sink2(i32 %a, i1 %c, i1 %c2) {
; CHECK-LABEL: and_sink2:
; CHECK: # %bb.0:
; CHECK-NEXT: movl $0, A
; CHECK-NEXT: testb $1, {{[0-9]+}}(%esp)
; CHECK-NEXT: je .LBB1_5
; CHECK-NEXT: # %bb.1: # %bb0.preheader
; CHECK-NEXT: movb {{[0-9]+}}(%esp), %al
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: .LBB1_2: # %bb0
; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
; CHECK-NEXT: movl $0, B
; CHECK-NEXT: testb $1, %al
; CHECK-NEXT: je .LBB1_5
; CHECK-NEXT: # %bb.3: # %bb1
; CHECK-NEXT: # in Loop: Header=BB1_2 Depth=1
; CHECK-NEXT: movl $0, C
; CHECK-NEXT: testb $4, %cl
; CHECK-NEXT: jne .LBB1_2
; CHECK-NEXT: # %bb.4: # %bb2
; CHECK-NEXT: movl $1, %eax
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB1_5: # %bb3
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: retl
; CHECK-CGP-LABEL: @and_sink2(
; CHECK-CGP-NOT: and i32
%and = and i32 %a, 4
store i32 0, i32* @A
br i1 %c, label %bb0, label %bb3
bb0:
; CHECK-CGP-LABEL: bb0:
; CHECK-CGP-NOT: and i32
; CHECK-CGP-NOT: icmp
%cmp = icmp eq i32 %and, 0
store i32 0, i32* @B
br i1 %c2, label %bb1, label %bb3
bb1:
; CHECK-CGP-LABEL: bb1:
; CHECK-CGP: and i32
; CHECK-CGP-NEXT: icmp eq i32
; CHECK-CGP-NEXT: store
; CHECK-CGP-NEXT: br
store i32 0, i32* @C
br i1 %cmp, label %bb2, label %bb0
bb2:
ret i32 1
bb3:
ret i32 0
}
; Test that CodeGenPrepare doesn't get stuck in a loop sinking and hoisting a masked load.
define i32 @and_sink3(i1 %c, i32* %p) {
; CHECK-LABEL: and_sink3:
; CHECK: # %bb.0:
; CHECK-NEXT: testb $1, {{[0-9]+}}(%esp)
; CHECK-NEXT: je .LBB2_3
; CHECK-NEXT: # %bb.1: # %bb0
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movzbl (%eax), %eax
; CHECK-NEXT: testl %eax, %eax
; CHECK-NEXT: movl $0, A
; CHECK-NEXT: je .LBB2_2
; CHECK-NEXT: .LBB2_3: # %bb2
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB2_2: # %bb1
; CHECK-NEXT: movl $1, %eax
; CHECK-NEXT: retl
; CHECK-CGP-LABEL: @and_sink3(
; CHECK-CGP: load i32
; CHECK-CGP-NEXT: and i32
%load = load i32, i32* %p
%and = and i32 %load, 255
br i1 %c, label %bb0, label %bb2
bb0:
; CHECK-CGP-LABEL: bb0:
; CHECK-CGP-NOT: and i32
; CHECK-CGP: icmp eq i32
%cmp = icmp eq i32 %and, 0
store i32 0, i32* @A
br i1 %cmp, label %bb1, label %bb2
bb1:
ret i32 1
bb2:
ret i32 0
}
; Test that CodeGenPrepare sinks/duplicates non-immediate 'and'.
define i32 @and_sink4(i32 %a, i32 %b, i1 %c) {
; CHECK-LABEL: and_sink4:
; CHECK: # %bb.0:
; CHECK-NEXT: testb $1, {{[0-9]+}}(%esp)
; CHECK-NEXT: je .LBB3_4
; CHECK-NEXT: # %bb.1: # %bb0
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: testl %eax, %ecx
; CHECK-NEXT: movl $0, A
; CHECK-NEXT: jne .LBB3_4
; CHECK-NEXT: # %bb.2: # %bb1
; CHECK-NEXT: leal (%ecx,%eax), %edx
; CHECK-NEXT: testl %eax, %ecx
; CHECK-NEXT: movl %edx, B
; CHECK-NEXT: je .LBB3_3
; CHECK-NEXT: .LBB3_4: # %bb3
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB3_3: # %bb2
; CHECK-NEXT: movl $1, %eax
; CHECK-NEXT: retl
; CHECK-CGP-LABEL: @and_sink4(
; CHECK-CGP-NOT: and i32
; CHECK-CGP-NOT: icmp
%and = and i32 %a, %b
%cmp = icmp eq i32 %and, 0
br i1 %c, label %bb0, label %bb3
bb0:
; CHECK-CGP-LABEL: bb0:
; CHECK-CGP: and i32
; CHECK-CGP-NEXT: icmp eq i32
store i32 0, i32* @A
br i1 %cmp, label %bb1, label %bb3
bb1:
; CHECK-CGP-LABEL: bb1:
; CHECK-CGP: and i32
; CHECK-CGP-NEXT: icmp eq i32
%add = add i32 %a, %b
store i32 %add, i32* @B
br i1 %cmp, label %bb2, label %bb3
bb2:
ret i32 1
bb3:
ret i32 0
}
; Test that CodeGenPrepare doesn't sink/duplicate non-immediate 'and'
; when it would increase register pressure.
define i32 @and_sink5(i32 %a, i32 %b, i32 %a2, i32 %b2, i1 %c) {
; CHECK-LABEL: and_sink5:
; CHECK: # %bb.0:
; CHECK-NEXT: testb $1, {{[0-9]+}}(%esp)
; CHECK-NEXT: je .LBB4_4
; CHECK-NEXT: # %bb.1: # %bb0
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: andl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl $0, A
; CHECK-NEXT: jne .LBB4_4
; CHECK-NEXT: # %bb.2: # %bb1
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: addl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: testl %eax, %eax
; CHECK-NEXT: movl %ecx, B
; CHECK-NEXT: je .LBB4_3
; CHECK-NEXT: .LBB4_4: # %bb3
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB4_3: # %bb2
; CHECK-NEXT: movl $1, %eax
; CHECK-NEXT: retl
; CHECK-CGP-LABEL: @and_sink5(
; CHECK-CGP: and i32
; CHECK-CGP-NOT: icmp
%and = and i32 %a, %b
%cmp = icmp eq i32 %and, 0
br i1 %c, label %bb0, label %bb3
bb0:
; CHECK-CGP-LABEL: bb0:
; CHECK-CGP-NOT: and i32
; CHECK-CGP: icmp eq i32
store i32 0, i32* @A
br i1 %cmp, label %bb1, label %bb3
bb1:
; CHECK-CGP-LABEL: bb1:
; CHECK-CGP-NOT: and i32
; CHECK-CGP: icmp eq i32
%add = add i32 %a2, %b2
store i32 %add, i32* @B
br i1 %cmp, label %bb2, label %bb3
bb2:
ret i32 1
bb3:
ret i32 0
}
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