; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mcpu=generic -mtriple=i686-- | FileCheck %s
%struct._obstack_chunk = type { ptr, ptr, [4 x i8] }
%struct.obstack = type { i32, ptr, ptr, ptr, ptr, i32, i32, ptr, ptr, ptr, i8 }
@stmt_obstack = external dso_local global %struct.obstack ; <ptr> [#uses=1]
; This should just not crash.
define void @test1() nounwind {
; CHECK-LABEL: test1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: testb $1, stmt_obstack+40
; CHECK-NEXT: jne .LBB0_1
; CHECK-NEXT: # %bb.2: # %cond_false30.i
; CHECK-NEXT: pushl $0
; CHECK-NEXT: calll 0
; CHECK-NEXT: addl $4, %esp
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB0_1: # %cond_true23.i
; CHECK-NEXT: retl
entry:
br i1 true, label %cond_true, label %cond_next
cond_true: ; preds = %entry
%new_size.0.i = select i1 false, i32 0, i32 0 ; <i32> [#uses=1]
%tmp.i = load i32, ptr getelementptr (%struct.obstack, ptr @stmt_obstack, i32 0, i32 10) ; <i32> [#uses=1]
%tmp.i.upgrd.1 = trunc i32 %tmp.i to i8 ; <i8> [#uses=1]
%tmp21.i = and i8 %tmp.i.upgrd.1, 1 ; <i8> [#uses=1]
%tmp22.i = icmp eq i8 %tmp21.i, 0 ; <i1> [#uses=1]
br i1 %tmp22.i, label %cond_false30.i, label %cond_true23.i
cond_true23.i: ; preds = %cond_true
ret void
cond_false30.i: ; preds = %cond_true
%tmp35.i = tail call ptr null( i32 %new_size.0.i ) ; <ptr> [#uses=0]
ret void
cond_next: ; preds = %entry
ret void
}
define i32 @test2(ptr %P, ptr %Q) nounwind {
; CHECK-LABEL: test2:
; CHECK: # %bb.0:
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movzwl (%eax), %edx
; CHECK-NEXT: movzbl %dl, %eax
; CHECK-NEXT: movw %dx, (%ecx)
; CHECK-NEXT: retl
%A = load i16, ptr %P, align 4 ; <i16> [#uses=11]
%C = zext i16 %A to i32 ; <i32> [#uses=1]
%D = and i32 %C, 255 ; <i32> [#uses=1]
br label %L
L:
store i16 %A, ptr %Q
ret i32 %D
}
; rdar://10554090
; xor in exit block will be CSE'ed and load will be folded to xor in entry.
define i1 @test3(ptr %P, ptr %Q) nounwind {
; CHECK-LABEL: test3:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: movl (%eax), %eax
; CHECK-NEXT: xorl (%ecx), %eax
; CHECK-NEXT: testl $89947, %eax # imm = 0x15F5B
; CHECK-NEXT: je .LBB2_2
; CHECK-NEXT: # %bb.1:
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: # kill: def $al killed $al killed $eax
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB2_2: # %exit
; CHECK-NEXT: testl $-838178173, %eax # imm = 0xCE0A6A83
; CHECK-NEXT: sete %al
; CHECK-NEXT: # kill: def $al killed $al killed $eax
; CHECK-NEXT: retl
entry:
%0 = load i32, ptr %P, align 4
%1 = load i32, ptr %Q, align 4
%2 = xor i32 %0, %1
%3 = and i32 %2, 89947
%4 = icmp eq i32 %3, 0
br i1 %4, label %exit, label %land.end
exit:
%shr.i.i19 = xor i32 %1, %0
%5 = and i32 %shr.i.i19, 3456789123
%6 = icmp eq i32 %5, 0
br label %land.end
land.end:
%7 = phi i1 [ %6, %exit ], [ false, %entry ]
ret i1 %7
}
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